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C9510-319 - IBM WebSphere Application Server Developer Tools V8.5 with Liberty Profile - Dump Information

Vendor : IBM
Exam Code : C9510-319
Exam Name : IBM WebSphere Application Server Developer Tools V8.5 with Liberty Profile
Questions and Answers : 75 Q & A
Updated On : April 23, 2019
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C9510-319 Questions and Answers

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C9510-319 IBM WebSphere Application Server Developer Tools V8.5 with Liberty Profile

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C9510-319 exam Dumps Source : IBM WebSphere Application Server Developer Tools V8.5 with Liberty Profile

Test Code : C9510-319
Test Name : IBM WebSphere Application Server Developer Tools V8.5 with Liberty Profile
Vendor Name : IBM
Q&A : 75 Real Questions

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IBM IBM WebSphere Application Server

IBM WebSphere ahead of 6.0.2.25 dissimilar far off Vulnerabilities

IBM WebSphere prior to 6.0.2.25 dissimilar faraway Vulnerabilities

solution:IBM has launched an replace (6.0.2.25) to address these concerns. Please see the references for more information.

IBM Websphere software Server 1.0

IBM Websphere software Server 6.0.2.19IBM Websphere utility Server 2.0IBM Websphere software Server three.0 .2.3IBM Websphere utility Server 3.0IBM Websphere utility Server 3.0 .2.2IBM Websphere application Server three.0 .2.4IBM Websphere application Server 3.0.2 .1IBM Websphere utility Server 3.0.2IBM Websphere utility Server three.5IBM Websphere application Server 3.5.1IBM Websphere utility Server 3.5.2IBM Websphere application Server 3.5.3IBM Websphere application Server three.5.7IBM Websphere utility Server 4.0.3IBM Websphere application Server four.0.4IBM Websphere utility Server 5.0IBM Websphere application Server 5.0.1IBM Websphere utility Server 5.0.2 .2IBM Websphere application Server 5.0.2 .6IBM Websphere utility Server 5.0.2 .15IBM Websphere utility Server 5.0.2 .11IBM Websphere software Server 5.0.2 .7IBM Websphere software Server 5.0.2 .4IBM Websphere software Server 5.0.2 .10IBM Websphere utility Server 5.0.2 .5IBM Websphere utility Server 5.0.2 .1IBM Websphere application Server 5.0.2 .12IBM Websphere application Server 5.0.2 .9IBM Websphere utility Server 5.0.2 .16IBM Websphere utility Server 5.0.2IBM Websphere software Server 5.0.2 .8IBM Websphere utility Server 5.0.2 .3IBM Websphere utility Server 5.0.2 .13IBM Websphere application Server 5.0.2 .14IBM Websphere utility Server 5.1 .0.3IBM Websphere software Server 5.1 .0.5IBM Websphere application Server 5.1IBM Websphere application Server 5.1 .0.4IBM Websphere application Server 5.1 .0.2IBM Websphere software Server 5.1.1 .7IBM Websphere application Server 5.1.1 .16IBM Websphere application Server 5.1.1 .4IBM Websphere software Server 5.1.1 .2IBM Websphere software Server 5.1.1 .8IBM Websphere application Server 5.1.1IBM Websphere application Server 5.1.1 .10IBM Websphere utility Server 5.1.1 .1IBM Websphere utility Server 5.1.1 .12IBM Websphere software Server 5.1.1 .11IBM Websphere application Server 5.1.1 .14IBM Websphere application Server 5.1.1 .9IBM Websphere utility Server 5.1.1 .15IBM Websphere software Server 5.1.1 .3IBM Websphere software Server 5.1.1 .5IBM Websphere utility Server 5.1.1 .6IBM Websphere software Server 5.1.1 .13IBM Websphere software Server 6.0IBM Websphere software Server 6.0.1IBM Websphere application Server 6.0.2 .22IBM Websphere utility Server 6.0.2 .9IBM Websphere application Server 6.0.2 .1IBM Websphere utility Server 6.0.2 .24IBM Websphere utility Server 6.0.2 .3IBM Websphere application Server 6.0.2 .15IBM Websphere utility Server 6.0.2 .7IBM Websphere utility Server 6.0.2 .23IBM Websphere application Server 6.0.2IBM Websphere software Server 6.0.2 .21IBM Websphere application Server 6.0.2 .17IBM Websphere application Server 6.0.2 .11IBM Websphere application Server 6.0.2 .13IBM Websphere utility Server 6.0.2 .5

WebSphere vs. .net: IBM and Microsoft Go face to face

After accomplishing a number of benchmarks, Microsoft concluded that .internet presents enhanced performance and price-efficiency ratio than WebSphere. IBM rebutted Microsoft’s findings and carried out different checks proving that WebSphere is superior to .web. Microsoft spoke back by way of rejecting a few of IBM’s claims as false and repeating the checks on distinct hardware with distinctive consequences.

summary

Microsoft has benchmarked .net and WebSphere and posted the benchmark supply code, run rules, use suggestions and a findings report published at wholoveswindows.com entitled Benchmarking IBM WebSphere 7 on IBM Power6 and AIX vs. Microsoft .web on HP BladeSystem and home windows Server 2008.   This benchmark suggests a a lot greater transactions per second (TPS) fee and more advantageous cost/efficiency ratio when the usage of WebSphere 7 on home windows Server 2008 over WebSphere on AIX 5.three, and even improved results when using .net on home windows Server 2008 over WebSphere on the identical OS. The charge/efficiency ratio for the application benchmark used is:

IBM power 570 with WebSphere 7 and AIX 5.3 HP BladeSystem C7000 with WebSphere 7 and windows Server 2008 HP BladeSystem C7000 with .internet and windows Server 2008 $32.45 $7.92 $3.ninety nine

IBM has rebutted Microsoft’s benchmark and called some of their claims as false, and performed a distinct benchmark, with distinctive results. The benchmark used along with the findings have been published in Benchmarking AND BEATING Microsoft’s .net three.5 with WebSphere 7! (PDF). The source code of the benchmark become now not posted. The consequences display WebSphere as a much better performing middle-tier than .net with 36% extra TPS for one application benchmark and from 176% to 450% greater throughput for certainly one of IBM’s regular benchmarks.

Microsoft answered to IBM and defended their claims and benchmarking results with Response to IBM’s Whitepaper Entitled Benchmarking and Beating Microsoft .net 3.5 with WebSphere 7 (PDF). Microsoft has also re-run their benchmark, modified to include a distinct check circulate similar to the one used with the aid of IBM in their checks, running it on distinctive hardware, a single multi-core server, founding that certainly WebSphere is more advantageous than .web if the use of IBM’s examine circulation but most effective just a little superior, between 3% and %6, no longer as reported via IBM. besides that, these later findings do not trade the usual ones on the grounds that the benchmark turned into run on a distinct hardware configuration. within the end, Microsoft invitations IBM to “an independent lab to operate additional testing”.

Microsoft checking out .web in opposition t WebSphere

Microsoft has performed a series of exams evaluating WebSphere/Java in opposition t .internet on three distinct platforms. The particulars of the benchmarks performed and the look at various results had been posted within the whitepaper entitled Benchmarking IBM WebSphere® 7 on IBM® Power6™ and AIX vs. Microsoft® .internet on Hewlett Packard BladeSystem and home windows Server® 2008 (PDF).

systems proven:

  • IBM power 570 (vigour 6) working IBM WebSphere 7 on AIX 5.three
  • eight IBM Power6 cores at four.2GHz
  • 32 GB RAM
  • AIX 5.3
  • 4 x 1 GB NICs
  • Hewlett Packard BladeSystem C7000 working IBM WebSphere 7 on windows Server 2008
  • 4 Hewlett Packard ProLiant BL460c blades
  • One Quad-Core Intel® Xeon® E5450 (three.00GHz, 1333MHz FSB, 80W) Processor/blade
  • 32 GB RAM/blade
  • home windows Server 2008/64-bit/blade
  • 2 x 1 GB NICs/blade
  • Hewlett Packard BladeSystem C7000 operating .web on home windows Server 2008
  • identical because the outdated one but the functions proven run on .internet in its place of WebSphere.
  • a few three exams were performed on each and every platform:

  • change web application Benchmarking The functions validated had been IBM’s change 6.1 and Microsoft’s StockTrader 2.04. This series of exams have evaluated the performance of comprehensive facts-driven internet functions running on true of the above outlined structures. The web pages accessed had one or continually greater operations serviced by classes contained by the business layer and ending with synchronous database calls.
  • alternate middle Tier internet functions Benchmarking This benchmark turned into meant to measure the performance of the internet service layer executing operations which ended up in database transactions. The examine changed into corresponding to internet utility, however operations had been counted in my opinion.
  • WS examine net features Benchmarking This test turned into just like the outdated one however there turned into no company common sense nor database access. This become according to WSTest workload firstly devised by means of solar and augmented with the aid of Microsoft. The functions tier offered 3 operations: EchoList, EchoStruct and GetOrder. Having no company common sense, the look at various measured most effective the uncooked performance of the web service utility.
  • Two database configurations have been used, one for the all-IBM platform and one other for the other two: IBM DB2 V9.5 business edition with IBM DB2 V9.5 JDBC drivers for information entry and SQL Server 2008 databases enterprise edition. Two databases had been install for every configuration running on HP BL680c G5 blades:

  • 4 Quad-Core Intel XEON CPUs, @2.4GHZ (16 cores in each and every blade)
  • sixty four GB RAM
  • 4 x 1GB NICs
  • IBM DB 9.5 business version sixty four-bit or Microsoft SQL Server 2008 64-bit
  • Microsoft home windows Server 2008 64-bit, business version
  • 2 4GB HBAs for fiber/sans entry to the EVA 4400 storage
  • The storage became secured on HP StorageWorks EVA 4400 Disk Array:

  • ninety six 15K drives total
  • 4 logical volumes along with 24 drives each and every
  • Database server 1: Logical extent 1 for logging
  • Database server 1: Logical volume 2 for database
  • Database server 2: Logical extent 3 for logging
  • Database server 2: Logical volume four for database
  • The internet application benchmark used 32 customer machines running examine scripts. every computing device simulated a whole lot of purchasers having a 1 2d think time. The assessments used an adapted edition of IBM’s alternate 6.1 utility on SUT #1 & #2 and Microsoft’s StockTrader software on SUT #three.

    image

    For the internet service and WSTest benchmarks, Microsoft used 10 purchasers with a 0.1s feel time. For WSTest, the databases have been now not accessed. Microsoft has created a WSTest-compliant benchmark for WebSphere 7 and JAX-WS and one other in C# for .internet using WCF.

    image

    Microsoft’s whitepaper contains greater particulars on how the exams were carried out together with the DB configuration, DB entry used, caching configuration, check scripts, tuning parameters used and others.

    Conclusion

    The benchmarking consequences including the expenses/performance ratio are proven in here desk:

      IBM vigour 570 with WebSphere 7 and AIX 5.three HP BladeSystem C7000 with WebSphere 7 and home windows Server 2008 HP BladeSystem C7000 with .net and home windows Server 2008 total core-Tier system can charge $260,128.08 $87,161.00 $50,161.00 alternate net utility Benchmark 8,016 TPS 11,004 TPS 12,576 TPS cost/performance $32.forty five $7.92 $3.ninety nine exchange center Tier web service Benchmark 10,571 TPS 14,468 TPS 22,262 TPS charge/efficiency $24.sixty one $6.02 $2.25 WSTest EchoList verify10,536 TPS 15,973 TPS 22,291 TPS cost/efficiency $24.69 $5.forty six $2.25 WSTest EchoStruct examineeleven,378 TPS sixteen,225 TPS 24,951 TPS charge/efficiency $22.86 $5.37 $2.01 WSTest GetOrder check11,009 TPS 15,491 TPS 27,796 TPS can charge/performance $23.63 $5.63 $1.eighty

    according to Microsoft’s benchmarking effects, working WebSphere on HP BladeSystem with home windows Server 2008 is about 30% more productive and the cost-efficiency ratio is 5 times decrease than operating WebSphere on IBM vigor 570 with AIX 5.3. The .internet/windows Server 2008 configuration is much more productive and the charge/efficiency ratio drops to half compared to WebSphere/home windows Server 2008 and it is 10 instances smaller than WebSphere/vigor 570/AIX. The can charge-performance ratio is so excessive for the primary platform because the expense of the entire middle-tier is over $250,000 while the efficiency is decrease than the other structures.

    Microsoft’s benchmarking whitepaper (PDF) contains an appendix with comprehensive particulars of the hardware and utility costs. The benchmarking checks used, together with supply code, are posted on StockTrader website.

    IBM’s Rebuttal

    In another paper, Benchmarking AND BEATING Microsoft’s .internet 3.5 with WebSphere 7! (PDF), IBM has rejected Microsoft’s benchmark and created an additional one showing that WebSphere is performing better than .web.

    Microsoft had spoke of that StockTrader is akin to IBM’s exchange utility:

    Microsoft created an utility it truly is functionally akin to the IBM WebSphere alternate application, each in terms of user functionality and center-tier database access, transactional and messaging behavior.

    IBM rejected Microsoft’s declare:

    The application claims to be “functionally equivalent” to the IBM WebSphere alternate 6.1 pattern application. It isn't a “port” of the application in any sense. Little, if any, of the long-established software design changed into ported. Microsoft has made this an software that showcases using its proprietary technologies. an enormous indication of this is the proven fact that the .web StockTrader application isn't a universally obtainable internet utility seeing that it might probably best be accessed through the use of information superhighway Explorer, and never by means of different net browsers.

    moreover, IBM said that exchange turned into not designed to benchmark WebSphere’s efficiency however somewhat to

    function a sample application illustrating the utilization of the points and features contained in WebSphere and the way they involving utility efficiency. furthermore, the software served as a sample which allowed developers to explore the tuning capabilities of WebSphere.

    IBM had different complaints concerning Microsoft’s benchmark:

    Microsoft created a totally new application [StockTrader] and claimed purposeful equivalence on the application level. The truth is that the Microsoft version of the utility used proprietary SQL statements to entry the database, not like the common version of trade 6.1 which was designed to be a portable and common software.

    They employed client side scripting to shift one of the software feature to the customer.

    They demonstrated net features capabilities by inserting an useless HTTP server between the WebSphere server and the customer.

    And If that become no longer sufficient, they did not thoroughly display screen and regulate the WebSphere utility server to obtain peak performance.

    IBM’s aggressive task office team (CPO) has ported StockTrader 2.0 to WebSphere growing CPO StockTrader and claiming: “we did a port that faithfully reproduced Microsoft’s application design. The intent became to achieve an apples-to-apples assessment.” So, dealer 6.1 turned into ported through Microsoft from WebSphere to .internet under the name StockTrader and ported once again through IBM returned to WebSphere below the name CPO StockTrader. IBM benchmarked CPO StockTrader towards StockTrader and acquired more advantageous consequences for WebSphere towards .internet:

    image

    IBM has additionally counseled they are the usage of pleasant bank, an utility intended to benchmark WebSphere in opposition t .internet. during this examine WebSphere outperforms .net a few instances:

    image

    in their StockTrader vs. CPO StockTrader benchmark, IBM used scripts simulating user pastime: “login, getting costs, inventory purchase, stock promote, viewing of the account portfolio, then a logoff” and working in stress mode with out think times. 36 clients have been simulated, satisfactory to power each and every server at highest throughput and utilization. The facts back became validated and errors have been discarded.

    The front conclusion turned into implemented with WebSphere 7/home windows Server 2008 in a single case and .web 3.5 with IIS 7/windows Server 2008 in the different. The again conclusion database changed into DB2 8.2 and SQL Server 2005, both on windows Server 2003.

    The hardware used for trying out changed into:

    efficiency testing device HardwareX345 8676 Server2 X 3.06 GHz Intel Processor with Hyper Thread Technology8 GB RAM18.2 GB 15K rpm SCSC tough Disk Drive1 GB Ethernet interfaceApplication Server Hardware IBM X3950 Server, 8 x 3.50 Ghz, Intel Xeon Processors with Hyper Thread technology, sixty four GB RAMDatabase Server HardwareX445 8670 Server, 8x three.0 Ghz. Intel Xeon Processors with Hyper Thread technology, 16 GB RAMUltraSCSI 320 Controller , EXP 300 SCSI enlargement Unit, 14x 18.2 GB 15K rpm complicated Disk power configured as 2 Raid Arrays.One for Logs & One for Database, each and every array is constructed from 7 hard disks in a Raid 0 configuration.The Ethernet community backbone The isolated community hardware is constituted of 3x 3Comm SuperStack 4950 switches and one three Comm SuperStack 4924 swap running at 1 GB.

    The utility and hardware configuration for the pleasant bank benchmark was corresponding to the StockTrader one.

    IBM’s whitepaper carries suggestions about the pleasant financial institution application, however does not aspect to the source code. It also mentions that the software become initially designed for .web Framework 1.1 and changed into just recompiled on .internet three.5 devoid of being up-to-date to use the newest applied sciences.

    Microsoft Response to IBM’s Rebuttal

    Microsoft has spoke back to IBM’s rebuttal in yet an additional whitepaper, Response to IBM’s Whitepaper Entitled Benchmarking and Beating Microsoft .web three.5 with WebSphere 7 (PDF). in this document, Microsoft defends their common benchmarking effects and affirms that IBM made some false claims of their rebuttal document entitled Benchmarking AND BEATING Microsoft’s .internet three.5 with WebSphere 7!, and IBM didn't use a suitable benchmarking procedure.  more has been posted at wholoveswindows.com.

    definitely, Microsoft spoke of here claims are false:

  • IBM claim: The .net StockTrader doesn't faithfully reproduce the IBM alternate utility performance.Microsoft response: this claim is fake; the .net StockTrader 2.04 faithfully reproduces the IBM WebSphere exchange utility (the usage of general .net Framework technologies and coding practices), and may be used for fair benchmark comparisons between .web 3.5 and IBM WebSphere 7.
  • IBM declare: The .net StockTrader makes use of client-aspect script to shift processing from the server to the client.Microsoft response: this declare is false, there isn't any client-facet scripting within the .internet StockTrader utility.
  • IBM declare: The .internet StockTrader makes use of proprietary SQL.Microsoft response: the .web StockTrader makes use of regular SQL statements coded for SQL Server and/or Oracle; and offers an information entry layer for each. The IBM WebSphere 7 trade application in a similar way uses JDBC queries coded for DB2 and/or Oracle. Neither implementation uses kept strategies or functions; all enterprise common sense runs within the application server. simple pre-organized SQL statements are utilized in each applications.
  • IBM declare: The .internet StockTrader is not programmed as a universally purchasable, thin-customer net utility. therefore it runs handiest on IE, no longer in Firefox or other browsers.Microsoft response: definitely, the .net StockTrader web tier is programmed as a universally available, pure skinny customer internet utility. besides the fact that children, a simple problem in theuse of HTML remark tags explanations issues in Firefox; these remark tags are being up to date to allow the ASP.web application to appropriately render in any industry standard browser, together with Firefox.
  • IBM claim: The .net StockTrader has errors under load.Microsoft response: here is false, and this document contains further benchmark exams and Mercury LoadRunner particulars proving this IBM declare to be false.
  • additionally, Microsoft complained that IBM had developed friendly financial institution for .net Framework 1.1 years in the past the usage of obsolete applied sciences:

    IBM’s pleasant bank benchmark makes use of an out of date .net Framework 1.1 utility that includes technologies corresponding to DCOM which have been obsolete for a long time. This benchmark may still be entirely discounted unless Microsoft has the opportunity to overview the code and replace it for .web 3.5, with more moderen applied sciences for ASP.web, transactions, and windows verbal exchange groundwork (WCF) TCP/IP binary remoting (which changed DCOM as the favorite remoting expertise).

    Microsoft regarded IBM failed by not proposing the source code for CPO StockTrader and friendly financial institution functions and reiterated the indisputable fact that the entire supply code for Microsoft’s benchmark applications concerned during this case had been made public.

    Microsoft also noticed that IBM had used a modified check script which “blanketed a heavier emphasis on buys and also blanketed a sell operation”. Microsoft re-carried out their benchmark the use of IBM’s modified check script movement, one together with the operations purchase and sell beside Login, Portfolio, Logout, on a single four-core software server putting forward that

    these tests are in response to IBM’s revised script and are meant to fulfill some of these IBM rebuttal test situations as outlined in IBM’s response paper. They should no longer be considered in any way as a transformation to our customary outcomes (carried out on different hardware, and different look at various script stream); as the customary effects continue to be valid.

    The check changed into carried on:

    utility Server(s) Database(s) 1 HP ProLiant BL460c1 Quad-core Intel Xeon E5450 CPU (three.00 GHz)32 GB RAM2 x 1GB NICsWindows Server 2008 sixty four-bit.internet three.5 (SP1) 64-bitIBM WebSphere 64-bit 1 HP ProLiant DL380 G52 Quad-core Intel Xeon E5355 CPUs (2.sixty seven GHz)sixty four GB RAM2 x 1GB NICsWindows Server 2008 sixty four-bitSQL Server 2008 sixty four-bitDB2 V9.7 sixty four-bit

    The outcomes of the check shows an identical efficiency for WebSphere and .internet.

    image

    one in all IBM’s complaints had been that Microsoft inserted an needless HTTP web server in front of WebSphere cutting back the number of transactions per 2d. Microsoft admitted that, however added:

    the use of this HTTP Server changed into utterly discussed within the normal benchmark paper, and is finished based on IBM’s own most appropriate follow deployment instructions for WebSphere. In this sort of setup, IBM recommends the use of the IBM HTTP Server (Apache) because the entrance conclusion internet Server, which then routes requests to the IBM WebSphere application server. In our tests, we co-determined this HTTP on the same computing device because the utility Server. this is akin to the .net/WCF web carrier exams, the place we hosted the WCF internet services in IIS 7, with co-located IIS 7 HTTP Server routing requests to the .net software pool processing the WCF carrier operations. So in each assessments, we demonstrated an equal setup, using IBM HTTP Server (Apache) as the front end to WebSphere/JAX-WS functions; and Microsoft IIS 7 as the front end to the .web/WCF functions. therefore, we stand in the back of all our long-established outcomes.

    Microsoft carried out yet yet another examine, the WSTest, with out the intermediary HTTP web server on a single quad-core server just like the old one, and acquired right here effect:

    image

    both checks carried out by using Microsoft on a single server reveal WebSphere maintaining a slight efficiency potential over .web however no longer as a good deal as IBM pretended of their paper. anyway that, Microsoft remarked that IBM didn't comment on center-tier charge assessment which enormously favors Microsoft.

    Microsoft endured to problem IBM to

    meet us [Microsoft] in an independent lab to operate additional checking out of the .internet StockTrader and WSTest benchmark workloads and pricing evaluation of the center tier software servers proven in our benchmark record. in addition, we invite the IBM competitive response group to our lab in Redmond, for discussion and extra trying out of their presence and under their evaluate.

    last Conclusion

    generally, a benchmark carries

  • a workload
  • a collection of guidelines describing how the workload is to be processed – run rules -
  • a method attempting to ensure that the run guidelines are revered and consequences are interpreted as it should be
  • A benchmark is constantly intended to examine two or more systems as a way to check which one is more suitable for performing certain projects. Benchmarks are additionally used with the aid of companies to improve their hardware/application earlier than it goes to their purchasers via testing different tuning parameters and measuring the effects or through spotting some bottlenecks. Benchmarks can even be used for advertising applications, to show that a undeniable equipment has more desirable efficiency than the competitor’s.

    in the starting, benchmarks were used to measure the hardware efficiency of a device, just like the CPU processing energy. Later, benchmarks were created to verify and compare purposes like SPEC MAIL2001 and even software servers like SPECjAppServer2004.

    There is not any ideal benchmark. The workload can be tweaked to desire a definite platform, or the information can also be misinterpreted or incorrectly extrapolated. To be convincing, a benchmark needs to be as clear as possible. The workload definition should still be public, and if possible the supply code should still be made accessible for these fascinated to analyze. a clear set of run guidelines are mandatory so different parties can repeat the identical checks to see the consequences for themselves. the way effects are interpreted and their that means ought to be disclosed.

    We don't seem to be aware about a response from IBM to Microsoft’s closing paper. it would be entertaining to peer their reaction. probably, the top-rated strategy to clear things up is for IBM to make the supply code of their tests public so anybody interested might test and see for themselves the place is the truth. until then we are able to handiest speculate on the correctness and validity of these benchmarks.


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    IBM WebSphere Application Server Developer Tools V8.5 with Liberty Profile

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    Tom Banks on the IBM WebSphere Application Server Liberty Profile

       

    2. [...] One might see obviously what's in it for you; it’s an awesome job. But what is IBM getting out of showing radio-controlled cars and sponsoring you and your great efforts as Evangelist?

    Martin's full question: Tom, as a technical Evangelist for IBM, you seem to have an ideal job for a Software Engineer and Computer Scientist, travelling the world over attending tech conventions and demonstrating video controlled cars. One might see obviously what's in it for you; it’s an awesome job. But what is IBM getting out of showing radio-controlled cars and sponsoring you and your great efforts as Evangelist?

    So my whole role is to go out and approach development communities and approach developers. Either online or at conferences such as QCon and to talk to them about the different interesting things that I can do with IBM’s technologies and to try to show them new things that I can do.

    So when you talk to a developer and you mention an application server, then if they've used application servers like as an OS or as a web site or they can use it as a middleware environment.

    But then they know that you can take that, you can put it onto a relatively low power embeddable device such as a Raspberry Pie and they can remotely control devices.

    Not just radio controlled cars but home automation or any kind of physical device that’s got an electronic control component from over the Internet or over a local Wi-Fi using Internet standards.

    And so, I go out to developers, I tell them about these cool new technologies they can do, these cool new things they can do with our technology to try to make them think a little bit outside the box when it comes to enterprise software so that they can innovate using our software and these new spaces.

       

    3. Is the object of your Code Rally to encourage kids and others to get involved in coding and to eventually to become tomorrow's software programmers over at Big Blue?

    We do have a couple of objectives with the Code Rally Game. First, as you rightly mentioned, is to encourage kids and students to learn how to develop software. To learn how to use Java most specifically and to become the next software engineers. Not just for Big Blue, for IBM, but our customers, especially in the middleware environment with the Liberty Profile Application Server. Our customers are our end-users, our developers, so in a way we're educating them so that we have more end-users to go out there who know about our software and who know how easy it is to use. And then go out there and use it in their jobs later on.

    The other role of Code Rally is, because it’s an Open Source game, and because we’ve documented how we built it, is it’s a very good case study, very good showcase on what you can do with IBM software.

    So it’s built using Rational Team concept. Which is an IDE that has got an SPM component. And that links up with the JazzHub. Which is an online code repository, which allows you to create teams of software developers who can be spread all over the world. Such as the Code Rally Team was. And they can work together collaboratively on software engineering projects.

    And then creating programs and using that software built on top of the Liberty Profile Application Software. Which is an example of a very good application server you can use. And again because it’s Open Source you can see how we're using the Liberty Profile.

    You can look at some of the interesting things we are doing with it, as we are doing some very interesting things in the Code Rally Game and learn from it by just looking at the source code and looking at our use case.

    Martin: You mentioned Java, that's mainly the language of choice for IBM, and what about HTML5 files and…

    Java is your service site programming language. That is what runs a vast majority of enterprise software and it’s a very good programming language to use when it comes to HTML5 that's more of an instance of Liberty Profile.

    That's what it will be sending out. So you are not just writing in Java when you are writing a web application. You’ve got to write your web front-end. Which you should be using HTML5, now you're maybe using JavaScript and Dojo in addition to that.

       

    4. [...] Do you ever get flack about sporting such a title and what manner of technological belief so to speak, if anything, are you trying to convert your listeners to adopt?

    Martin's full question: Regarding the use of the term of Evangelist, according to Wikipedia it was originally taken from the context of religious Evangelism, do the similarity of relaying information about a particular set of beliefs with the intention of converting the recipient. Do you ever get flack about sporting such a title and what manner of technological belief so to speak, if anything, are you trying to convert your listeners to adopt?

    Yes, I got a huge amount of stick from my friends; from family, from people who had the job title Technical Evangelist, because we are going to put out a big red book and start beating over the head with it to get them to use IBM software. So I do get a lot of stick for that title. In a way I do what the description says, I do go out there and I do evangelize around my beliefs and when it comes to Software Engineering. So I’m biased.

    I was a Software Engineer working on the WebSphere Application Server Liberty Profile before I took this role as the Evangelist. And because I’ve worked on that and I understand the code behind it and I understand the reasoning we’ve gone through when we’ve been designing it constantly keeping the end-user of the developer in mind to make it easy for them.

    I do believe that we do have the best application server for developers to develop on. We’ve made every decision focused on making it easy for the developers, so they have to do as little as possible to keep an application server running in the development environment and having to make the least changes to it.

    And so I do believe whole-heartedly that we do have the best software. And I’m trying to show developers not just to try it. Because more often than not, when a developer tries to use the Liberty Profiler and sees how easy it is to use, they do agree that it's a very, very good development environment to use.

       

    6. [...] And if so, can you explain how people might want to try that for themselves if they can?

    Martin's full question: Regarding your technique of using gamification with the, I saw that you used Ubuntu Virtual Machine for using your Minecraft application, is the Ubuntu Virtual Machine the best method that you found for getting the Web Sphere Application Server Liberty Profile to work on Android devices? And if so, can you explain how people might want to try that for themselves if they can?

    So for Code Rally we don’t actually highlight using Ubuntu for that. You can write your own Code Rally on Linux, OSX or Windows. We have a Windows history all around me at the moment but we do support all of the various platforms.

    So as with Liberty Profile, if Liberty will run on your OS, such as those three platforms I just mentioned, then Code Rally will run on top of that.

    As for the question of running the Liberty Profile on Android, then because Android uses the Dalvik Virtual Machine, it’s not 100% Java in the sense of the JVM language that you’d write in the application server for. So you can’t just use in a mobile phone platform the Dalvik VM on Android. And there is no Java equivalent Virtual Machine on iOS or Windows Phone. So we had to figure out a way of getting an actual Java Virtual Machine onto a mobile platform. The easiest way of doing that is by taking Android's OS. It's the most open of the three operating systems and installing Ubuntu as a loop device almost like a Virtual Machine in that sense, so you are running Android and that's controlling all your device drivers, your internet access over the 3G radio, over the Wi-Fi etc, and then you have your Ubuntu Virtual Machine on top of that.

    And kind of hitchhiking on the back of that driver's support in Android, so Android does all of the driver model for the hardware and Ubuntu just thinks its got an Ethernet connection to the outside world.

    And because we’ve got Ubuntu then running on a mobile phone or a tablet computer, you can then install a Java Virtual Machine, so Open JDK for example, and then once you’ve got that installed, you can install a Java EE application Server such as the Liberty Profile, one that supports any JVM, so there's no IBM Virtual Machine that runs on devices.

    So we couldn’t support enterprise software that's only supported on say J9 and it’s the same with some other application servers. They might not run on non-specific Virtual Machines, but with Liberty it does, so it’s very easy to do.

       

    7. Could you’ve done that or have you done that with iOS?

    So we’ve not managed to do it with iOS or Windows Phone because there's no easy way of installing Ubuntu or any Linux variant or any OS that has a Java Virtual Machine onto those pieces of hardware.

    I mean you could take a Windows Phone potentially and replace the entire operating system with Ubuntu. But then you’ve got to find driver support and other things so it’s much easier to target the Android platform due to its openness and there's nothing for iOS except its lockdown and Apple don't want you replacing in iOS.

       

    8. As a Software Engineer what are some of the steps that you might take when you're developing a software-testing tool?

    That's going back to a few years ago now with my software testing. So I did used to work in software testing and it depends on what software you are testing and what level of testing you want to do.

    If you are using Unit Testing and then attempt to write a standard Unit test using the Eclipse IDE. And if you are looking at more functional testing then we tend to build our own testing frameworks, which will execute our tests automatically for us.

    Which is very useful considering the huge number of tests that we run on our software in a build environment. So fire and check-back in an hour software build environment verification tests for our systems tasks etc. So it’s amazing what it's testing.

       

    9. How about this ISEB Foundation Certification? How has that helped you in your career, your certification with ISEB and has that been affected in any way by the recent name change to BCS Professional Certification?

    The ISEB Certificate in software testing that I got was encouraged and paid for by IBM a few years ago when I was just working as an industrial trainee, an intern essentially, in the UK.

    And IBM does encourage all of its employees to undergo education such as that to try to improve them as software engineers. So by going on that course it made me very aware of the different types of testing you want to do and the best practices for that and the 'test first' style of software development.

    Where you write your test almost before you’ve written your code. So you’ve got your test case ready and then you make your code work with that, so you are testing everything.

    That has helped me a lot in my career because, not because it’s a qualification, because it’s just a line on a piece of paper, but it improved me as a software engineer. And so the name change of the foundation didn’t affect it because the quality of what I’ve learned is still perfectly valid.

    Martin: We talked a little bit about what can be performed with the Liberty Server for Minecraft. Describe where you think maybe that's going and what tools that you created to work with Minecraft. And describe that process of creating the tools and the plug-in for it...

    So this is going back about a year now, when we were working on the Liberty Profile and we wanted a way of making it easier to use. Or coming up with some fun new unique ways of interfacing with software. So I’ve got a very strong development gaming background from my degree. And so I chose to try and modify a computer game with a virtual world to control enterprise software, in this case the Liberty Profile. So I chose Minecraft because it’s a Java game. So I’m already very familiar with the language and it’s very easy to modify, especially with the Open Source. I said the Open Source, the community around Minecraft, and it's not Open Source itself. But you can get versions of it that you can access the source code on. So I wanted to try and see how easy it was to write a modification for Minecraft and to try and think on how I could utilize Liberty's and JMX's API to control the enterprise software from another piece of software.

    So I wanted to do the Minecraft work and wanted to figure out how to control Liberty from the software. It made sense to modify the computer game to control the enterprise software and that was relatively easy and it took a couple of hours and an evening to put that together and then have some fun with it.

    And by doing that we’ve been able to give it to interns, to students, to graduates, to engineers in IBM to try out and yes, we're not going to be distributing it as an official user interface.

    Our users don't have to worry about having to play games to control software. But it's just trying to make people think on how they can control their software by showing look: “It’s so easy”, we even managed to convert a computer game. The thing that is least suited as a user interface for enterprise software almost and we’ve managed to make that work.

    So you can go out there and you can create your own user interfaces if you wanted to that customize specifically for your individual use case. And I still encourage people to try that out.

       

    10. And you eliminated some of the characters because they could cause some difficulties with it?

    Yes. So because in the Minecraft user interface you can, you physically build a physical representation of your application server architecture. There are enemy mobs in the Minecraft game who detonate, destroying parts of the world. And you don’t want those running into your very carefully setup representation of your server and then destroying half of it, so we make sure to remove those.

    Martin: So if they try that at home, they better scout out those first.

    You don’t want your user interface fighting against you. I’m sure plenty of servers out there will say that it would probably be a nightmare to be fighting real fires in your user interface as well as fires in your hosting environment.

       

    11. How do you like QCon San Francisco so far Tom?

    It’s a really good conference. There are a lot of developers here from loads of different backgrounds. You’ve got developers representing big corporations, you’ve got developers who are working on their own and it’s great to be able to talk to those different groups and to get their own different views and opinions on what we're doing and to get feedback on the software that we are creating for them.

    That's really, really valuable because we want everyone to be using our software, we are not just targeting big business anymore. Which is one of the reasons why we made the Liberty Profile free for developers. It’s just so anyone out there can go out there and give it a try and learn how to write EE applications on it.

       

    13. What's your impression on the differences if any between New York’s QCon and SF’s QCon?

    How to answer this without insulting one side of the country? So we’re at the first day of the conference here at the moment. So I’ve not spoken to too many different developers. I’ve not really noticed much of a difference. I'm seeing a good mix. I’ve not been to any presentations because I spend more of my time talking to developers around their ideas and personally that's more interesting to me.

       

    14. How about all the, I know you pretty much go all over the world espousing your evangelism for IBM and so what about elsewhere like in Europe and Asia where you’ve been, might have been, what do you notice like reactions to your presentation-wise, are there any differences and different interests and questions geographically?

    We do see a little bit of geographical difference. So I tend to focus mostly on Europe and North America at the moment. I am hoping to be able to go to more African, South American and Asian Conferences in the coming year since I’m relatively new to the role and have not been able to do that yet. The reaction in France is more different to the reaction in the US, especially to the Code Rally Car and also to the Code Rally Game and to the Liberty Car. So in France we saw a lot of competition between two groups of developers on the Code Rally Game. Where we are running a competition where they had to write their own alley to drive the car around the track and the fastest couple of cars to win the prize. And we had these two groups of developers who spend about four hours over a couple of days sitting at these laptops during the conference, just hammering out the code, trying to beat each other.

    So there is a little bit more competitiveness there within the groups. In the US especially we tend to see people, if you have a group of developers, they take a laptop each and they'll compete with each other as well as against other groups of developers. But in France they seem more focused on everyone crowding around one laptop and getting it to work or doing their own thing. It’s more of a us versus them as a case of a me versus them approach, but that is just…

       

    15. Where are the best opportunities at IBM, Tom, these days?

    IBM is a huge company, so I work with people all around North America, Canada, Europe and Asia as well. There are opportunities all over the place. The trick is to just apply.

    So the one thing that I do notice is when I go to universities and I talk with students there and graduates, future graduates and all of them thinking: “I can’t apply to a big company like IBM because they only want experienced engineers” and I say to those people: “No, no” to take advantage of this and you can apply for the graduate schemes and they're a fantastic way of getting into the industry.

    So that's not restricted by geography, just give it a go, and doesn’t even need a Software Engineering Degree to work for IBM anymore. You can be a chemist or a physicist or a philosopher or a musician and as long as you show the right kind of personal qualities, they've got the opportunity.

    Martin: I saw they are advertising a lot of; they want a lot of people from mobile backend as a service technology so it’s doing a little…

    So the IBM mobile first initiative is very active at the moment, so yes, anyone with mobile and development experience or writing backend infrastructure for mobile development, always it’s a good time to come and try IBM software or to apply to write that software.

    Another big initiative we’ve got going on at the moment is IBM Design. So we are aware that some of the user interfaces or some of our software could be easier to use, especially some of our older software going back to the early or mid 2000's. And so to combat that and to make it much easier to use our software, we're bringing in a lot of web designers and user interface designers to come in and to help make things even better for our end users.

    So anyone with that sort of design background, you don’t have to have a very technical background for this, we do have a big initiative on that at the moment and I believe that's across geographies.

       

    16. You guys do a lot of training there?

    I believe they do give you training. I’m not in those areas. I do believe they give you all the training you need for it although that's the same with anywhere in IBM. But I know that UK and the US have a lot going on at the moment and the design initiative.

       

    17. Great, so what about the Liberty Car?

    The Liberty Car, I've had it on my lap all the time. So this is the Liberty Car, it’s a radio-controlled car, which we ripped the radio receiver out of; we plugged a Raspberry Pie computer, which for anyone who doesn’t know it’s a $30 computer. It’s based on a mobile phone chip about for or five years ago now. So it’s relatively slow but it’s very low power. You power it through your USB port so you can plug it into the main source.

    Into your laptop or TV or anything with a USB port to power it. It’s booted off an SD card. So you just write an image that you downloaded from the Internet onto an SD card and plug it in and away you go.

    And this runs Linux at the moment, so you’ve got a Linux operating system on a $30 dollar computer the size of a credit card that you can run almost anywhere. So what we did with that is we plugged that into the motors of the car, replacing the radio controller, we’ve given it a Wi-Fi network so it’s got its own USB power, Wi-Fi router within the car itself, so its got its own network in effect and on top of the Linux distribution we installed on that, which is Raspberry and the default image that you normally get for running on a Raspberry Pie.

    We install Open JDK6 as Agile Virtual Machine and on top of that we install Liberty Profile, so combining all of that together; powering the car with its internal battery.

    What that means is you can connect any mobile device, a mobile phone, a tablet, a laptop, a desktop computer with a Wi-Fi Dongle in it, you can connect it to the car zone Wi-Fi network, you can scan this QR code or entering the URL yourself and you can essentially get this webpage which is just a JavaScript web page, there's nothing proprietary about it and it works in pretty much any modern browser, and from that web page I can in effect drive the car and very, very close to real-time as a couple of milliseconds latency.

    But by doing this we are trying to show a couple of things. First is the car itself is what we call a Zero Infrastructure Environment. That means that it’s got its own processing, its own storage, its own networking, its own power supply, the whole last to a very good amount of time, I mean we are talking 20 hours. It’s completely self contained, very portable. If you get rid of car components, you can fit this in a palm of you hand pretty much. And we are trying to show people that you can take these setups, these applications, Java EE Applications setups and take them out of the server or even take them to wherever you need them.

    So it’s trying to get developers thinking what would I do with this or how can I use this in an environment where I don’t have reliable Internet. It’s trying to get them to think on what they can do with that. Which leads you to the Internet of Things. Which is the idea of that not distant future, hopefully soon since I’m a big fun of the Internet of things. We’ve got everything has its own brain; you can control everything using a mobile device. So your light bulbs have their own control. So what you can do if you have Wi-Fi, you can control an oven at home to turn it on when you are getting off from work. You can monitor your home and power usage from work and if you left the light on you could flip it off from the Internet.

    So to get to a use stage of the Internet of Things where everything seems to connect and it works with each other, we are going to need embedded devices such as a Raspberry Pie to be able to control these devices. And to be able to control them, we are going to need a web interacting with it. So I’m a big fan of using web standards. Because everyone has a web browser on their mobile phone pretty much and it’s a known quantity.

    It’s a known standard and hopefully by using Liberty Application Servers you can stick to those standards and avoid proprietary technology and proprietary communication protocols. Because that is the one thing that I don’t want to see within the Internet of Things, I don’t want to have 200 mobile apps installed on my phone to control my home. Because there is no point in doing that when you can do that using just simple web pages or a mobile app that can just interface and understand what a user interface represents based on communicating with devices.

    So what we are trying to show here is just this self contained app server environment as well as embedding small devices to control pretty much anything.

       

    18. Right, so the Internet of Things, how far away is that? Have we begun the Internet of Things or are we in the prehistoric?

    I’m not going to do the thing of giving the year we'll see that. Because that's just impossible to guess when we'll see it fully pervasive. But we are seeing it now; we are starting to see it more and more all the time. So you can buy light bulbs now that you just plug into a standard attachment, they’ve got their own Wi-Fi Mesh network and so you can control all those from a mobile app.

    You’ve got home automation kits already, which allow you to control different devices in your house. But those two things, on the whole using propriety standards, you’ve got competing standards and it’s a shame to see that.

    I’m hoping with devices such as the Raspberry Pie we'll see more manufacturers moving to using devices like this that are off of the shelf, just plug and play as opposed to a lot of these implementations and using these devices hopefully they’ll start using more open standards in their communication protocols to let you control these using less apps.

    Since that will just be a nightmare and I think that would kill it. But I think we are seeing it now. We are starting to see it roll out slowly and every couple of months you see more devices coming out that link together.

       

    19. Does IBM have any plans, are they looking at the Internet of Things or are they just waiting on the sidelines for that to develop?

    So I’m going out now talking about the Internet of Things showing how you can use the Liberty App Server. Yes, it’s part of the pack of demos that I have to take around with me. It’s one of the things that I’m really passionate about seeing.

    I really want to see this into connectivity because it makes things just like living in the future pretty much, where you can just take out your phone and turn the lights on, turn the TV on, put the oven on, see what food you’ve got in the fridge, you can do that all from your mobile phone instead of having to go and do those things. That's pretty cool to me, pretty Sci-Fi.

       

    20. What about 3D printing, it’s any..?

    3D printing it’s fantastic. There are a lot of engineers that I work with back in the lab in Hursley who’ve got their own 3D printers. I see that as becoming something very, very useful in the future.

    I’m not aware of any IBM initiatives in 3D printing because it’s a physical printer and it’s more of a consumer base product. But again 3D printing is a fantastic thing and I’d love to have a 3D printer of my own. I plan to have one pretty soon because of the different things you can do with them.

       

    21. Awesome, so Tom on your world travels as technical Evangelist for IBM where do you go next?

    I’ve got one more conference left in 2013 and that is the LJC Conference in London. That is near the end of November, on the 23rd of November I believe Saturday.

    And that is a smaller conference than QCon. So it’s going to be about 150 developers but again there are developers from all different backgrounds. So you’ve got developers for large corporations, for medium size businesses and developers who are self employed.

    So it’s great to go and speak to those communities and find out about what they think is interesting in Software Engineering and what they like and don’t like about some of the things that we are doing.

    Martin: There're in for an educational experience I’m sure. Thanks so much for being with us here at QCon San Francisco Tom!

    Thank you!


    IBM Liberty: Modular and solid as a rock

    Some stars take a little longer to shine. If you would have come to the IBM conference in ICC in Berlin, which took place in October 2011 and you wanted to attend one of the two presentations titled “Lean WebSphere environment for development”, you most likely wouldn’t have been able to find a seat, and you would have witnessed cheers and extended applause. What happened? It was an audience that, aside from the undeniable strengths of the IBM WebSphere Application Server (WAS), had most likely got used to its somewhat poor attributes: complex configuration, high resource consumption and long start times for the server or application. In a worldwide premiere, Ian Robinson (WAS Chief Architect) and his colleague Tim deBoer presented an application server of a completely different kind: a start time of 2 s (seconds!) using an old-fashioned notebook and a 60 MB ZIP file for the installation of the entire application server – no more DVD stacks.

    IBM understands

    An unequivocal and clear statement was met with even more enthusiasm: We are not unaware of what ails the developers, in particular. Yes, it has taken a while. As of today, however, everything is different. The presentation introduced the “Liberty Profile”, a completely new version of the IBM WebSphere Application Server.

    And what’s up with that star, five years later? Back then it was a pre-release version of an application server. Today, IBM WebSphere Liberty – some may have to overcome their antipathy to the name and look at things in perspective – is a valuable server, certified for Java EE 7 Full Profile, that remains slim, fully suitable for production and supported by the manufacturer. As was the case before, the transition to the application server is very simple: after a download of only 50-100 MB, depending on the version, a simple unzip is all that’s needed and Liberty is installed. One more command and the server can be started.

    The configuration is just as simple: if you like, a single XML file is all you need. Whoever uses Tomcat will be familiar with it. Anyone used to the IBM configuration has been unfamiliar with this kind of elegance and simplicity, until now.Even though Liberty is far less known than Tomcat or JBoss/WildFly, some myths die hard. We want to explicitly clear up a few of them.

    Myth #1 about the configuration: “There’s no graphical configuration tool”. Yes, there is. If you want one, you can use the practical IBM WebSphere Liberty Server configuration tool [1], a browser-based administration and configuration tool. There is also the option to use the graphical editors from the Eclipse-based WebSphere Developer Tools (WDT) to edit the XML configuration files. WDT can be downloaded via the Eclipse marketplace, and thus Myth #2 is exposed: „You need expensive Rationals Tools to work with WebSphere“.

    The configuration via XML file or UI serves another purpose, however, that you won’t know from other Java EE application servers, namely the definition of the features to be prepared by the application server. This partly explains the puzzle of how IBM has been so successful in making such a slim server. It is completely modular. The developer or administrator tailors their server precisely using the selection of modules in the configuration.

    Liberty consists of modules

    IBM developed the Liberty Profile as a modular server with fine granularity from the bottom up. Standardized and proven OSGi technology is used for modularization, which is known to properly depict the ideas of versioning and dependencies between components.

    A kernel of the server loads the specified Liberty modules at startup. It loads further modules automatically when they are needed. IBM started using internal modularization by way of OSGi in the classic WebSphere Application Server V6.1 back in 2006. In that case, however, you could ban the portlet container or JCA container that is not being used from the central memory. The granularity of the modularization of Liberty is much finer and, in our view, unique to Java EE servers. In order to clear up an obvious misunderstanding: Though OSGi is hidden from the normal Java EE user, you can also use it for the program code comprehensively in Liberty, of course – as is the case for many application servers. The list of features and their modules is too comprehensive for this article, so we’ve included a link [2]. We think an example might be useful here:

    Imagine the Java EE application you use requires JSF. The JSF feature is loaded in Liberty through the corresponding configuration. Liberty automatically obtains the servlet and JSP features and their modules, thanks to OSGi. If the application does not use any JSF or JSP-based UI, but rather just servlet calls, only the servlet feature loads. As a result, no CPU cycle or central memory is used for the JSP or JSF functionality.

    SEE ALSO: IBM software engineers: “We needed to be more agile”

    Liberty is completely Java EE 7 certified

    Myth #3 about specification: “Liberty only supports the limited JEE Web Profile.” From the developer’s perspective it is great that, for the above-named feature concept, Liberty has been a fully certified Java EE 7 application server since Version 8.5.5.6 [3].This makes it much more than the classic WAS as far as this current programming model is concerned. It also supports the use of Java SE 1.6, 7.0 and 8.0, and not only in the in-house implementation of IBM, but also Oracle, for example. IBM offers comprehensive, production-ready support for Liberty via the standard agreements. This depends on what edition of Liberty you have. The selection ranges from a simple version certified only for Java EE 7 Web Profile to a clusterable edition that offers much more than only Java EE 7.

    Zero migration with Liberty

    The above-described modularity allows IBM to break new ground with Liberty in order to make using Java EE technology as efficient and agile as possible. A migration of the runtime environment to a higher version eliminates the significant efforts involved in testing and, if necessary, adapting the existing applications for the new version. Given the backward compatibility of many specifications, the extent of adjustment for a single application is generally minor. However, it can’t be avoided. In addition, there are often a hundred or more applications that can be affected particularly in larger environments. And the migration process is not complete until the final application has been adapted. The result: unpredictable project durations that can often go on for many months.

    Thanks to its modular structure, Liberty offers a surprisingly elegant solution for this. The migration of Liberty means that an old existing feature would have to make way for a new version; the new version does not simply replace the old one. Instead, the new version is added, which means that both are available.

    An example: Liberty currently has the features “servlet-3.0” and “servlet-3.1”. If applications only require “servlet-3.0”, the server can be configured so that only this feature is loaded. In this way, the servlet runtime environment doesn’t change (from the application perspective). If this applies to all features required by the application, the application migration is no longer required here.

    In addition, the OSGi-based architecture ensures that incompatibilities between features or certain versions of features are reported at server startup and not only at the runtime. For example, the simultaneous use of “servlet-3.0” and “websocket-1.1” is blocked from the start.

    SEE ALSO: IBM technology evangelist: Outsourcers are “like pizza boxes”

    Continuous delivery of new features

    IBM is breaking the mold when it comes to the development of and support for Liberty. The traditional way of adding functions through new releases and refresh packs can slow progress in many projects. Too rarely are there updates.

    Here, IBM has two approaches to the solution, marketed under the slogan “Continuous Delivery Model”. It is now common that new functionality is made available through the quarterly fix packs. Something that was only available in a restricted format, mainly in the form of additional properties for fine configuration of individual components of the application server. Now, entirely new features are rolled out as follows:ejb-3.2, batch-1.0, jacc-1.5 and countless others were introduced in fix pack 8.5.5.6, so that the Java EE 7 certification was possible at this level and above.The real innovation, however, is the Liberty Repository. Here, IBM is providing new functions for Liberty continuously, without fixed schedules and lengthy announcements. This could involve new APIs, features, or tools, as well as scripts or “snippets” for the configuration of the server. Anyone looking for open source components like Struts, RichFaces, Hibernate or others with Liberty will find everything they need there.

    The Repository is accessed from the IBM Installation Manager, directly via the website [4], or from the developer tools available for Eclipse environments (these in turn must be installed via the Eclipse Marketplace). Search and filter functions help you find suitable downloads from the well over 150 entries that are already there. For existing Liberty installations, it is also possible to access the Repository via the command line. In this case, the dependencies of features are taken into account automatically.

    Sweet spots in modern architectures

    Despite all the euphoria, you have to look at the reality of the data centers, of course, in order to find the best application scenarios for Liberty. Often, a Java EE Application Server already exists, with recorded and possibly automated procedures for server installations, deployment and testing of applications, etc. Adding a new product here would have to be carefully considered. Since there is no “wsadmin” scripting language from the traditional WebSphere Application Server (WAS) for Liberty, such processes cannot be transferred from a WAS to Liberty without some effort.

    Myth #4 about the target group: “Liberty is intended only for developers”.

    It must be mentioned that Liberty can be used in production environments without restriction. There are cluster mechanisms that enable reliability and load balancing. Larger environments can be administered centrally via an interface (keyword: “collectives”). The scaling potential here is even better than in a classic WAS.

    Therefore, using Liberty is less about replacing an existing infrastructure in one fell swoop. Instead, it makes more sense to select the projects that best take advantage of Liberty’s strengths. These are, for example, dynamic and modern runtime architectures like Docker or Cloud. Here, IBM has already created the best prerequisites for Liberty with the platform as a service solution Bluemix. Liberty is likewise recommended for highly scalable server environments with potentially thousands of specialized servers, since the slim and module structure of Liberty works particularly well in that context. Software architectures based on microservices would be a perfect scenario for that.

    Even if you don’t take existing Java EE landscapes into account, there are still plenty of arguments in favor of Liberty: a certified programming model with Java EE 7, production capability through scalability and reliability mechanisms and the reliable support from IBM.

    And on top of that, the IBM contingents in companies finally have a really cool product to show off again.

    Links & literature

    [1] http://serverconfig.mybluemix.net/

    [2] www.ars.de/web/resources/Liberty.pdf

    [3] http://www.oracle.com/technetwork/java/javaee/overview/compatibility-jsp-136984.html

    [4] Liberty Repository: https://developer.ibm.com/wasdev/downloads/


    WebSphere Liberty Now Java EE 7 Compatible

    News

    WebSphere Liberty Now Java EE 7 Compatible
  • By John K. Waters
  • 07/21/2015
  • IBM's WebSphere Application Server (WAS) Liberty profile, v8.5, is now Java EE 7 certified, the company announced this week. The latest stable release of this lightweight profile of the app server for Web, mobile, and OSGi also includes many of the related open standards and proprietary WAS APIs that are available in so-called WAS Classic, the company said.

    WAS Liberty, which is a functional subset of the full profile of the WebSphere app server, is used for both development and production. Version 8.5 continues to support Java EE 6. Liberty can be used in bare-bones form, or augmented with additional features, which can be downloaded from the Liberty Repository.

    The list of new features in the Java EE 7 release includes, among others: Java EE client container support; facilities to perform data validation in Java EE and SEE apps; support for the Java API for RESTful Web Services, version 2.0; support for Enterprise JavaBeans 3.2 and EJB 3.2 Lite (ejbLite 3.2); support for Java Authorization Contract for Containers; support for the Java API for JSON Processing; WebSocket 1.1 support.

    The profile also provides features to support batch functions that extend the app server to accommodate apps that must perform batch work alongside transaction apps. Among these: a REST API for remotely managing job executions; a command-line utility for using the remote management API (and for waiting job completion); per-executions job logs with interleaved runtime and app log records; among others.

    There's also new support for the Java API for XML RESTful Web Services 2.0 (JAX-RS 2.0), which allows developers to configure the client to access REST endpoints. Version 2.0 introduces a new and standardized Client API, making it possible to make HTTP requests to remote RESTful Web Services. And there's new support for Java Connector Architecture 1.7, which enables the configuration of resource adapters to access Enterprise Information Systems (EIS) from applications.

    A complete list of features is available in IBM WASdevnet Developer Advocate Laura Cowen's June blog post. IBM software engineer Cindy High's post includes a useful list of "things to be aware of when updating apps to Java EE 7."

    The latest version of the WAS Liberty runtime is available now for download.

    About the Author

    John has been covering the high-tech beat from Silicon Valley and the San Francisco Bay Area for nearly two decades. He serves as Editor-at-Large for Application Development Trends (www.ADTMag.com) and contributes regularly to Redmond Magazine, The Technology Horizons in Education Journal, and Campus Technology. He is the author of more than a dozen books, including The Everything Guide to Social Media; The Everything Computer Book; Blobitecture: Waveform Architecture and Digital Design; John Chambers and the Cisco Way; and Diablo: The Official Strategy Guide.



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    IBM C9510-319 Exam (IBM WebSphere Application Server Developer Tools V8.5 with Liberty Profile) Detailed Information



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