Have it your way

One of the trends I've been seeing a lot of lately in the industry is a movement towards something I would call "build to order". Given that this is something that we see in a number of industries (restaraunt meal preparation, automobile options, custom motorcycles, etc.), it seems no surprise to me that the computing industry wouldn't also be affected by this. We all want to have it our way, not what is provided for the mass of humanity. In a highly competitive industry, having custom solutions can provide differentiation which may be crucial in a value chain. On the other hand, it can also hinder your ability to adapt if it means creating a new custom solution for every customer.

WebSphere Application Server (WAS) has been on a path for some time now to enable custom solutions. Starting way back with WAS 6.0 (2004), astute system administrators may have noticed that we have started packaging the WebSphere runtime in OSGi bundles located in the "plugins" directory. What OSGi does is allow for some separation of concerns and decoupled code selection, as well dynamic hook points for integration. This, in turn, allows WAS to be configured in a variety of ways that were difficult or impossible in the past.

Take, for example, the use of open source. When used in an application, it can help the application developer achieve their goals in a rapid way by utilizing the efforts of the open source community rather than reinventing similar function. The same could also be said for the server. If you are wondering about how much open source gets used in creating WAS, try taking a look at the /lafiles/notices file. Having all this open source in the server can be both good and bad. If an application developer wants to take advantage of it, it's there. However, if it's not the version of the open source the developer wants to use, it can be bad. This is where OSGi's separation of concern can come into play. OSGi modules allow for restricted views of the code in the OSGi bundle. Use of OSGi bundles allows servers to take advantage of open source without actually exposing it to applications. The server's use of open source will not interfere with application's that bundle and use open source. WAS version 7 has refactored much of its runtime to hide open source intended to be used by the runtime. This is coupled with new managed shared libraries, isolated shared library classloaders, and the repackaging of open source into the /optionalLibraries directory to make it much easier to deploy and configure applications. Applications can either bundle the open source they want, or manage multiple shared lib versions of it used by applications in WAS version 7.

Another area where OSGi has helped is in server footprint. OSGi allows for dynamic code use and enables the possibility of load on first use. What this means is that you now have the option of configuring the server to use only as much of the runtime as is necessary. OSGi alone can't do this, so a fair amount of work has gone into getting the WAS version 7 runtime enabled for dynamic provisioning, some of which can be automated, and some of which must be manually configured. One of the most frequent questions I get around this is how much will it reduce the server footprint. As with all performance related questions, it will depend on the scenario. I will say that we've only touched the tip the iceberg for possibilities here and I think we've got a good head start on the competition. For more details, stay tuned to hear from Andrew Spyker as he posts updates on WAS performance.

WebSphere Application Server V7.0 Messaging

WebSphere Application Server V7.0 contains a number of enhancements to the service integration technology (SIBus) that make it easier to set up and manage, improve performance and provide greater flexibility for messaging applications.

To help you discover the new features contained in V7.0 we'll be blogging them at WebSphere and Messaging over the coming weeks.

Here's a taster of some of the new features of WAS V7.0 that we'll cover:

• Consumability improvements
  • New console wizards to make configuration easier
  • Improved facilities for monitoring and control
• Improved integration with WebSphere MQ
  • Using WMQ directly from WAS via the new JCA 1.5 Resource Adapter
  • Using WMQ via the SIBus - increased platform coverage and additional facilities
• Clustering improvements
  • Better workload balancing
  • New options for message routing and visibility
  • Response routing within a cluster
  • Additional options for MDB activations
• Security changes
• Connectivity from client environments and from servers outside the cell
• Performance improvements

All of the new features of WAS V7.0 are described in the InfoCenter but if you'd like to hear about them from a different perspective and have the opportinuty to discuss them, then please pay a visit to the WebSphere and Messaging blog.

Graham

WebSphere and Java Persistence

With the recent announcement of WebSphere v7, we are now on our second release of providing a Java Persistence API (JPA) solution for our WebSphere customers. We first delivered JPA as part of the WebSphere v6.1 Feature Pack for EJB 3.0. Built on top of the Apache OpenJPA project, not only is the WebSphere JPA solution CTS compliant, but it also contains several WebSphere value-add extensions.

In WebSphere v7, the WebSphere JPA solution provides the following features beyond the base JPA specification (those marked with an asterisk were provided in the Feature Pack for EJB 3.0 as well):

• Performance Improvements
• DB2 pureQuery (Static SQL) integration
• ObjectGrid Cache plugin
• SQL Statement Batching *
• DB2 Select Statement Optimizations *
• Consumability Improvements
• Access Intent support
• XML Column Mapping *
• DB2Diagnosable exception processing *
• Enhanced tracing using AspectJ *
• Database generated version IDs *
• Command scripting (.bat/.sh) *
• Globalization
• NLS Message Files *

More information on these features can be found in the InfoCenter. Due to the numerous requests we receive concerning the WebSphere JPA solution, we have also decided to create a blog devoted to WebSphere and Java Persistence. Please visit and share your comments as we continue to populate this avenue for sharing information.

New Dynacache Features in WebSphere 7 - Part 1

Are you looking for WebSphere Application Server V7.0 new features? If so, look here. If you are looking for new features relating to Dynacache, continue reading.

I am excited about the new Dynacache heap management feature in WAS 7. The primary motivation for introducing this feature is for serviceability. Many times customers trip up on themselves by caching too much stuff. I have lost count of the number of critical situations where I have been hauled from the bed, by some customer critical situation where the server was down due to an OOM error. It is extremely important to size the cache well. Unfortunately this is not an easy thing to do and pre-production stress testing in some cases does not simulate real world traffic which leads to an underutilized cache and thus false confidence in the capacity utilization of the cache.

This is not an easy problem to solve. There is no sizeof operator in Java which will tell us the size of an object in the JVM heap. Therefore we have to use all sorts of smarts, trickery and some help from the application developer to determine the total amount of memory on the JVM heap taken up by the cache. All earlier techniques to determine cache size rely on serializing the cached objects and metadata because that is the only way to accurately determine the size of the objects. In WebSphere 7 we have taken a much light weight approach which does not rely on serialization to determine cache heap size.

Most application servers allow cache size to be controlled by no.of entries. We are taking cache size management to the next level in WebSphere Application Server 7.

What exactly does Dynacache provide ?
WAS Dynacache component will provide an ability to constrain the cache in terms of the JVM heap. In addition to specifying the cache size in MB, Dynacache will also allow customers to set a high water mark and a low water mark for the cache heap consumed. Once cache heap memory reaches the high water mark, dynacache will either discard or evict the least recently used items to disk, till the cache is brought down to the low water mark. This functionality of limiting the cache in terms of the JVM heap will be available if the objects put into the cache that implement the com.ibm.websphere.cache.Sizeable interface. When servlet caching is enabled, all the cached JSP and servlet responses will be Sizeable. This interface will have one method which will return the size of the Object in bytes put into the cache. Dynacache will use the Sizeable interface to estimate the heap size of the cache. This feature will be OFF by default. A customer will have to explicitly enable and set cache limits and watermarks.

How to enable this feature ?

On the Dynacache service panel, WebSphere exposes the Dynamic Cache object cache service and Dynamic Cache servlet cache service. The Dynamic object cache service is always started at server start up. The Dynamic servlet cache service is started when the servlet caching is enabled in WebContainer panel. There is now a checkbox for Memory Cache Size which will control the memory cache size with high/low threshold. In addition to specifying the size the customer can also specify a range for the heap by setting threshold limits. The Servlet and Object Cache instance under the Resources -> Cache Instances have also include the Memory Cache Size control feature.

WebSphere Application Server Version 7.0 Performance Highlights

We recently announced WebSphere Application Server V7.0. Over the next week, I will be sharing some of the performance highlights of our teams' work improving existing usage scenarios as well as performance grooving of new V7.0 features. Here are some of the areas I plan to discuss.  Let me know if you'd like to see other areas and I'll work to include them as well.

• General Java EE
• Web Services including JAX-WS and WS-* standards support
• Persistence including EJB3 and JPA
• Startup Time and Memory Footprint
• Security including Java SE, Admininstration, Java EE, and new features
• Java SE Performance
• Hardware exploitation (64-bit, Multicore, Virtualization)
• Support for SIP based communication in our convergence sevlet container

Documentation Approach about Web Services for WebSphere

As part of the approach for delivering Web Services as part of WebSphere Application Server, the web services team is experimenting with multiple approaches for providing information to our end users. In addition to updating the Information Center about new features about web services, we are looking at alternative approaches to getting information into our hands of our end users. One approach is using developerWorks articles. For the Feature Pack for Web Services that we delivered on top of WebSphere Application Server v6.1, we worked with the developerWorks editors and put together a list of articles, which discuss the technology. As part of that work, we listed comparisons between JAX-RPC and JAX-WS (part1, part2, part3, part4, and part5) as well as the JAX-WS technology itself (via dispatch clients and JAX-WS annotations). For interoperability between the Feature Pack for Web Services and other vendors, we offer the following articles for interoperability with Microsoft (part1 and part2) and Apache Axis2. Other miscellaneous articles include a discussion of WS-I’s Supply Chain Sample Application built on the Feature Pack and troubleshooting web services applications in the Feature Pack and we have more in the pipeline.

Lastly, another approach is the usage of Redbooks. Members of our development organization participated with other IBM folks to help produce a Feature Pack for Web Services Redbook. These are all meant to be ways to compliment our existing Information Center and provide specific useful scenarios in a more end-to-end fashion to help our developers get on board.

I hope you like the approach and would be interested in hearing your feedback.

In case you thought the SCA rock stopped rolling...

I'm very pleased to announce to this community that we have made active the first beta of the newly re-based Feature Pack for Service Component Architecture for WAS V7.0! My team has been killing themselves, slaving away using new agile processes, keeping on top of the latest WAS builds to bring you this technology on the new WAS! To sweeten the pot for some of you out there, and you know who you are, we are even offering the feature pack beta in a popular VMWARE distribution which is configured to run a SUSE Linux guest with the SCA Feature Pack and WAS V7.0 betas pre-canned and ready for you to play with. Our development and beta teams are excited to engage all of you SOA application developers out there-- welcome!

Beta details here. Of course, our code is based on the Tuscany open source project which I've blogged about before.

I want to thank all of my development and beta team members for all of their hard work.

The TPC is working on a SOA Benchmark proposal submitted by IBM

Given the comments I made previously on SOA benchmarking, I'm happy to report that the Transaction Processing Performance Council (TPC) has agreed to evaluate an SOA benchmark proposal submitted by IBM. You can see in the recent "Meet the TPC" working session, the TPC discussed the TPC SOA workgroup on page 8. The summary is rather high level - "Tasked to evaluate SOA benchmark proposal from IBM". I believe if this proposal is accepted with modifications by other TPC participants, customers of SOA solutions and the industry can truly benefit from the TPC's standards-based benchmarking experience and levels of customer trust. I personally will be working to make this workgroup a success, with the intent of making SOA performance as understood as hardware, database, and J2EE performance. If there are companies out there with SOA solutions, I would personally encourage them to join the TPC and participate in this or other benchmarks and workgroups. I hope to, in the future, blog about the success of this workgroup and benchmark.

eWeek: "IBM WebSphere at 10"

Darryl Taft from eWeek: IBM WebSphere at 10

Excerpt:

"IBM Senior Vice President and Software Group General Manager Steve Mills met with three of his top lieutenants in his office back in 1997 to discuss the "Webification" of IBM's enterprise tools. Out of that discussion the IBM WebSphere Application Server was born."

I had just joined IBM in 1997 and was working on DB2 for OS/390. While I was trying to figure out what this "mainframe" thing was why anyone would want to manage it from OS/2, smart folks in Raleigh were creating the future. Well done, gents.

The Poor (Broke) Man's Java Profiler

When I talk to customers about big performance issues they are experiencing in their applications I usually mention "The Poor Man's Profiler". Actually, when I use this phrase, I am talking about Java core dumps. Java comes with a cool feature where you can send a break signal to the Java process and get a core dumped to the working directory of the application. In that core, if you search for "Full thread dump", you will see what is happening in all the threads of the application. If you do that a few times during load, you can very poorly approximate a Java profiler. If you have an application that won't scale or a Java process that is taking minutes to complete an operation, its amazing how often you can find the issue with Java cores.

Here is how you do it.

1. Get the application running under load (or if its a single threaded long running operation, just let the operation get started).


2. Send a BREAK signal to the Java process. In Unix/Linux, you can do this with kill -3 ProccessId. In Windows, you can do this by using a program called SendSignal (Note I don't endorse this tool, but happen to find it useful).
   
   
   You'll see the process start to consume exactly one CPU in the system (on a uniprocessor box, 100% CPU, on a 4-way box, 25% CPU, for example). During this time the JVM is doing its job collecting up all the information for the core. At the end it will dump the core to the working directory of the application. Once it is done (could take some time) the CPU will go back to normal.


3. Let the process continue for a little while, so the application gets back into its normal state.


4. Then repeat the previous steps starting with the BREAK signal three or more times (the more the better).


5. Look at the information in the thread dump section (search for "Full thread dump") of the Java core and make sure it looks similar in all three (or more) core dumps. If so, you should have enough certainty to trust what you see in the core dumps.

In a future post, I'll talk about what to look for in the Full Thread Dump, but to get you started, if you see the same method repeatably on the top of the stack of multiple threads, that is what you want to go after first.

In the last two months, I used this approach successfully to find problems in an application server application (bad third party libraries) and a migration script (bad algorithm for handling large amount of data). Both showed rather clearly what needed to be fixed in the program. Also, since this comes with Java, you need no tools to use the "poor man's profiler".

If you have questions or if you find this tip useful, please post a comment on this topic.

Tuscany Graduated

A quick shout out to my colleagues and all the folks who have worked so hard to develop an open community which supports Service Component Architecture. The Tuscany project at Apache has recently been promoted from an incubator project to a fully endorsed ASF top level project. This promotion recognizes the community for fostering an open and diverse membership, demonstrating capability to deliver stable, working implementations of the technology and also garnering the votes and confidence of the Apache Board. Congratulations on your success! Super job.

Evans Data Study: RAD scores the highest user satisfaction

It was with great pleasure that I read the Evans Data Study that was released this week; the study was a survey of over 1200 IDE users, and the bottom line was that RAD had the highest user satisfaction scores among the IDEs rated (including Oracle JDeveloper, Microsoft Visual Studio, MyEclipse and NetBeans). A survey is a survey; I have no doubt that you could find users of all of the above IDEs who are passionate supporters of their product of choice – but this survey revealed that compared to the other IDEs (and I’m quoting here) “RAD is just head and shoulders above them when it comes to user satisfaction.”

Cool; that’s what we’ve been trying to deliver, and it’s gratifying to see that our users are pleased with what we deliver.

What was most heartening to me, though, was what the survey didn’t measure; namely RAD 7.5. I think RAD 7.0 (which is the latest GA version of RAD that’s available) is a pretty darn good product, and the survey seems to agree with me – but I am even more pumped about what we have coming down the road, in the form of RAD 7.5. As I’ve discussed in this blog, we’ve had RAD 7.5 available in open beta since late last year – that code was refreshed at the beginning of May, and we’re still working on it. The fact that we were able to deliver public beta code so early in the schedule is a testament to the state and the quality of the release; we’re still adding features and function, we’re still fixing defects and improving the quality even more, and we’ve also got the benefit of lots of additional user feedback, with enough time (for a change) to do something about it. Put it all together, and I’m convinced that RAD 7.5 will be the best RAD we’ve ever delivered.

Back to the survey; results were provided giving an overall satisfaction of the different IDEs, and the various capabilities within the IDEs were also rated (how does your debugger rate, how do your web design tools rate, etc). Although we were first place in the overall rating, the RAD results in the individual areas were mixed; we did great in some places (application modeling tools, tech support, profiler, web design tools), and less well in other aspects. There was not a lot of variability in the rating for editors, all the products scored well - but in that category, RAD was in last place, for example.

That actually doesn’t surprise me, as the editors were one of the areas I was most concerned about as well – and for that reason, the editors, and the editing experience were one of the areas we’ve spent the most time and energy on, in RAD 7.5. I was presenting at the IBM Impact conference in April, and showed off some of the new features in RAD 7.5 – let me share a couple of highlights with you:

• The various deployment descriptor editors in RAD 7.0 were attempting to abstract away the details of the actual changes being made to the underlying files – but we’ve heard from numerous customers that it’s more important to assist the developers… but still “leave them in touch” with the underlying files being updated. We have a great new editor framework (the source of several patents) that we’re using across RAD 7.5, that means developers who make a change in the editor, will have no problem know what (and where) they have changed in the actual file – but at the same time, we still provide lots of help and validation in editing the actual contents. These new editors are getting great feedback from our beta customers.
  
  
• We’ve had a big focus on refactoring operations and quick fixes, both of which surface via editors of all shapes and sizes. Eclipse has a great history when it comes to providing refactoring operations, and RAD 7.5 really takes and extends that model; we participate in many existing eclipse refactoring operations now (for example, a rename will do the right thing across the many J2EE artifacts, as well the just the Java code), and we have added several of our own, J2EE specific refactoring operations. These refactoring operations allow us to provide significant help to developers who are updating their code, while leaving the editors to do just that – provide a good, focused, editing experience. Again, the feedback from beta users to date has been very positive on the changes we’ve made.
  
  
• JavaScript is increasingly important in a web 2.0 world, and so we’re introducing significant new support for JavaScript in RAD 7.5 – we have a comprehensive new JavaScript editor, which we’ve integrated into all the right places; you’ll now get support like code assist, syntax validation, and colour highlighting whether you are editing a standalone .js file, or a JavaScript snippet embedded in the middle of an HTML file, while you’re using the RAD page design tools.
  

These are just a few examples of the changes, improvements, and new features we’ve been developing for quite a while in RAD 7.5 – and the Evans survey has simply validated many of the decisions we’ve made; if we can be number one in user satisfaction with all our old editors, I’m super confident that we’ll be able to make developers even happier, and even more productive, with RAD 7.5.

Next up for me is the RSDC conference, in Orlando – we’ll be presenting and demoing RAD 7.5 there, so come by and say hi if you’ll be there.

Tim

GWC hosting an "Ask the Expert" day next Wednesday

The Global WebSphere Community (a.k.a. http://websphere.org) is hosting their annual "Ask the Experts" day with IBM Development and SOA experts on May 28th. You need to register as a GWC member to participate, but registering is free and fast and painless.

The session starts at 10:00 am Eastern and ends at 10:00 pm Eastern, and is basically an opportunity for GWC to both ask questions and submit ideas about WebSphere products, directly to the product teams. Do you have a nagging issue or a great idea? This is your chance to share both with IBM.

Join in!

Jobs and lyrics...emotional design

I'm no psychologist, but I play one on the interwebs. Anyway, let's take a blogger favorite subject, Steve Jobs...or preferably, El Jobso. Of the many things he's famous for, it's memorizing his speeches, down to the last seemingly spontaneous slip-up & joke. That "scrolls like butter" comment? Scripted. Yeah. Believe it.

But you gotta admit, it works. Whom else scripts their words so well? Musicians for one. And from his public speeches, we know El Jobso admires musicians. Musicians memorize their lyrics to get us to feel a certain way...just as El Jobso does when he demos the next new delicious piece of gadgetry. It's probably the highest art to get someone to feel as you do when you need them to. It's like a great concert when an entire stadium all feels the same emotion on cue. It's pretty cool, isn't it? So, where is all this going and how does it relate to WebSphere? We're getting there.

Compared to Apple, Microsoft's products are less emotive...but they're damn effective. They're good enough not to get in the way (most of the time...bluescreen...doh) and ubiquitous. Compared to Apple Music, they're Muzak. The white noise of music. Hold music. You know, that stuff in the background that helps you pass the time, but isn't so amazing that it forces you stop, to listen, to *feel*. That would be distracting. But it does remove some of the monotony.

Anyway, there's obviously a place (and I would say a need) for both approaches. I love beautiful objects as much as the next person, but after awhile, the beauty fades into the background, and utility had better be underneath, supporting the facade. Given a choice, people I speak to usually value utility over form, but only slightly, and only then after the glow of newness has worn off. You don't want your tool to be so difficult to use or so ugly that your profession becomes *work*. Bleh.

Frankly speaking, the WebSphere products I've worked on and with emphasize utility a bit too strongly over form. That is, they haven't been strong (but we're working on it) on design focus. We first set out to make efficient, scalable systems that run the back offices of your world reliably. Our model is mainframe reliability. You know, the every credit card transaction, every ATM withdrawal kinda stuff. But not the prettiest GUIs. Some Google software fits into this category...gmail/search/adwords, none too pretty, but all effective.

I suppose all software designers strive for that ultimate goal: perfect form, perfect function, perfectly intuitive, consistency top to bottom, inside and out. Based on the behavior of something you already know how to do, the next feature functions with the same general behavior. Looks, proportion, cut, color, fit, finish, function...all there. Applied well, your product develops a personality of a good, reliable, effective beautiful tool. A killer app. Much like a great sports car (maybe that's why we have so many comparisons between software and cars? but that's a topic for a different post...).

Anyway, those are my ramblings. Until next time, let us know your thoughts in the comments.

On Consumability...

Hi all, go easy on me given this is my first time posting here. Anyway, re: the title...you might not think of software as food, so indulge me for a minute. We can agree that anything more palatable is more consumable, no? Assuming that, then consumability of any product is a good thing -- they're "tastier" so to speak.

But Aaron, I hear you say...how do you make software more consumable?

Good question. Here's one handy definition: Time to Value. That means, from the time you identify that you'll use software to solve your problem, measure how long the interval is until you actually *deliver* a working software-based solution. Toss in a metric for average time to deliver maintenance and viola! Time to Value. Simple. Believable. Hard as s**t. But ultimately, we believe, doable.

IBM's idea, and this is portable across all software, everywhere, irrespective of origin/company etc. is this:

How effectively can clients identify the right IT solutions to solve a business problem, find the right IBM products and technologies to use, get the solution up and running, and maintain that solution? Our goal is to enable our clients to easily and effectively use our products to solve their business problems. Making this a positive experience leads to delighted clients, which in turn leads to strong references, repeat business, and revenue growth.

We're curious about your thoughts and as the months wear on, our progress (or lack thereof) in areas that you most need consumability.

Web 2.0 Collaboration, Sharing and Social Networking on WebSphere at Impact 2008

In my session at the Inner Circle at Impact 2008, I'll talk about the Collaboration, Sharing, Social Networking, and Portal capabilities provided by Lotus Quickr, Lotus Connections and WebSphere Portal that are all powered by WebSphere Application Server. I'll give an overview of these WebSphere applications and how they enable Web 2.0 collaboration and social networking to increase organizational productivity and will give an overview of their architecture, concluding with a set of demos.

Join me at Impact 2008 to discuss SOA Performance

I will be speaking on SOA performance at Impact 2008, the Smart SOA Conference, in Las Vegas in April. Please join me there at my session on Wednesday. The abstract for my session (1446A):

This session will discuss SOA performance as it relates to the IBM WebSphere® portfolio. The portfolio view will begin with runtime aspects including basic Web services (including the new Web Services Feature Pack). The runtime aspect focus will continue and build to choreographing and integrating these services across IBM WebSphere Process Server, WebSphere Enterprise Service Bus, WebSphere Message Broker, and the WebSphere DataPower® SOA appliance. The portfolio view will then focus on the SOA lifecycle, business activity monitoring and situation detection, and governance covering WebSphere Business Monitor and the WebSphere Service Registry and Repository. In addition, historical views on SOA performance will describe how performance has improved over the past two years. Finally, the session will discuss best performance practices when implementing SOA solutions.

I was also lucky enough to be included in a set of videos "On the Road to Impact" along with Kyle Brown on Event Processing and Ruth Willenborg on Virtualization. Go ahead and watch the videos and feel free to comment.

IBM WebSphere Application Server Total Leadership in SPECjAppServer2004

As noted in the IBM press release, we recently published a SPECjAppServer 2004 result that puts IBM on top of BEA, Oracle, and Sun for the absolutely largest SPECjAppServer 2004 throughput ever achieved. This result comes after we dominated the same competitive crowd on per cpu core performance as I blogged about previously. Both of these results matter. The per cpu core leadership shows application server performance in the most competitive light. The total configuration shows application server scalability in the most competitive light. IBM WebSphere dramatically wins both.

Some numbers from this total leadership publish:

• The result of 14004 JOPS represents roughly 75,000 transactions per second against the DB2 database. Simply impressive.
  
• The closest competitor in total throughput was Oracle at 10519. The IBM result tops that Oracle result by 33%. The IBM result tops the highest Sun result (8439) by 66%. The IBM result tops the highest BEA result (8253) by 70%.
  

Congrats to John Stecher and team. You can read more about the total configuration publish (and John's team) on InfoQ.

SPEC is a non-profit organization that establishes, maintains and endorses standardized benchmarks to measure the performance of the newest generation of high-performance computers. Its membership comprises leading computer hardware and software vendors, universities, and research organizations worldwide. For complete details on benchmark results and the Standard Performance Evaluation Corporation, please see www.spec.org. Competitive claims reflect results published on www.spec.org as of February 18, 2008 when comparing SPECjAppServer2004 JOPS on all published results as well as derived metrics calculated by SPECjAppServer2004 JOPS / Number of Application Server Processor Cores.

The facts of RAD

MyEclipse has issued a press release that mentions RAD, and may cause some confusion, so I'd like to take this chance to set the facts straight.

First of all, the transition from WSAD to RAD was purely a naming one. WSAD was delivered prior to IBM's acquisition of Rational, and RAD 6.0 was simply the next version of "WSAD" released under the Rational brand. RAD is entitled as a free upgrade to all active WSAD customers; there is no new cost - describing the transition from WSAD to RAD as complex or costly is either uninformed, or intentionally misleading.

The plumbing that formed the core of both WSAD and RAD was donated by IBM to the eclipse WTP project, to provide a defacto standard interface that others could extend - meaning that any tool extensions will work correctly and naturally with RAD. MyEclipse uses this base, so the basic project structure is the same - but the vast majority of the components that form RAD are not part of WTP; they are only available in the IBM offerings. Those value add components and functional areas are where we're spending most of our time and energy on, and that's where the real benefit of RAD comes from.

RAD 7.0, which has been available for over a year, includes comprehensive support for J2EE & Web Application developers, with support for pure spec compliant applications, as well as integration for all the WebSphere extensions - for example we don't just support JSF, we also ship and have outstanding support for the IBM JWL widget library; the latest version of JWL (which is only available with RAD) makes it fall-off-a-log easy to create an Ajax application, with no handwritten javascript at all (see http://webspherecommunity.blogspot.com/2007/06/simple-ajax.html for more details).

That said, simply providing spec level support is not really a differentiator today; that's why we donated the code we did to WTP. The RAD value proposition is it's ability to improve the productivity of developers across the entire development life cycle. Some examples:

• Some other products provide simplistic support of UML, that requires iterative generation of java code, followed by import actions to keep the diagrams and code in sync. This round trip engineering approach was available back in Rational Rose, and is a long way from state of the art now. RAD provides much more than that - for example, we provide UML visualization, which allows you to view, edit, and update Java code using UML views. There's no separate model to get out of sync; you're editing the live code, but in UML.
• All modern IDEs include support for database interaction and definition, but RAD has the benefit of working with the DB2 developers to provide exceptional support (for all major databases); RAD includes graphical views of your data topology, a SQL scrapbook, impact analysis tools, the ability to write user-defined functions (UDFs) & stored procedures, and phenomenal support for embedded SQLJ.
• RAD has in-depth support for application profiling, analysis & testing; you can execute, monitor, and trace the flow and performance of your application, right out of the box.
  

Of course, we also have the benefit of working hand in hand with our IBM colleagues, to provide the very tightest integration with WebSphere. It's not hard to deploy an application to WebSphere Application Server, but only RAD includes copies of three versions of WAS, to simplify your unit testing on a "real" WebSphere server, at no additional cost. Because we actually embed the WAS server, we support both remote application deployment and local application deployment, which gives you better deployment performance because there's no copying of files necessary. RAD also includes complete support for WebSphere Portal Server, including creation wizards, views, and editors that enable you to develop, test, debug, and deploy portal and portlet applications.

When it comes to production application deployment, RAD includes an advanced Jython editor, designed to simplify the task of developing and testing WebSphere automation scripts. We also offer unique integration with the WebSphere admin console, allowing you to capture key actions in the admin console and turn them into the equivalent Jython script commands. Finally, there's an embedded Jython debugger, that will let you single step through the admin script, examine variable values, etc.

IBM remains strongly committed to RAD; the next version of RAD (7.5) has been available as an open beta since late last year; you can find more details here: http://webspherecommunity.blogspot.com/2007/11/rational-application-developer.html. As you'll see if you try this code, RAD 7.5 provides many compelling features that focus on developer efficiency such as JEE refactoring and quickfix operations, while offering enhanced integration with products from all IBM brands, but especially Rational, WebSphere, and DB2. As I said in my blog entry, I'm really pleased with the progress the team has made on RAD 7.5; even though this is just a beta, the code is great quality, the performance is good, and all early reports are extremely positive - come check it out!

Tim Francis,
WebSphere Tools & RAD Chief Architect

WebSphere Process Server and ESB 6.1 Available

The 6.1 versions WebSphere Process Server, Enterprise Service Bus, and Integration Developer are available for download from passport advantage. I personally have used the 6.1 version for both our internal SOA benchmarks and a recent ESB project. I can attest for major functional improvements -- I wouldn't use anything less than 6.1 for ESB projects. Also, since this moved the underlying application server to WebSphere Application Server 6.1 and Java 1.5, there are some major performance improvements in this release. Oh, and WebSphere Integration Developer is now based on Eclipse 3.2.2 which enables far more of my eclipse plugins to work along with Integration Developer.

Links to more info:

WebSphere Process Server 6.1 new features
WebSphere Enterprise Service Bus 6.1 new features
WebSphere Integration Developer 6.1 new features

Enjoy!