Enterprise Service Bus (ESB) Magic

OSGi - "Seduced by technology in search of a problem" :) ?

2012-01-03T12:54:00.000-08:00

I was listening to a very interesting talk at QCon by Rod Johnson of SpringSource. The talk was titled "Things I Wish I'd known" and was about lessons he learned as an entrepreneur, which was very interesting!

Around 37:00 into the talk, he had a slide "Some things we got wrong at SpringSource" and it contained bullets about the over investment in OSGi for 2 years, which I quote below:

- Seduced by technology in search of a problem
- Clever technology but didn't solve most pressing customer problems

"Classic example of falling in love with a technology without considering the business implications.

We significantly over invested in OSGi and our dm-server technology for a couple of years. It wasn't a bad technology. Unfortunately, it simply solved a set of problems that a very small number of customers had., and yeah, we should have spent more time listening to the pressing problems our potential customers actually had.

That ultimately was something that we worked around, but we spent millions of dollars that we could have spent elsewhere."

Its interesting to note that about an year back, Ross Mason of MuleSource blogged about using OSGi in the Mule ESB in the post OSGi? No Thanks and said:

OSGi is a great specification for middleware vendors, but a terrible specification for the end user. This is because OSGi was never build for application developer consumption

Digital Content and Service Provider Jesta Digital Migrates to the UltraESB

2011-11-28T00:09:00.000-08:00

Zero-Copy proxying and Non-Blocking IO allows three node cluster to process ~80 million messages a day at just 5% CPU utilization and 300MB heap memory usage

AdroitLogic, developer of the high performance Open Source Enterprise Service Bus (ESB) UltraESB, today announced that Jesta Digital, a leading global provider of next generation entertainment content and services for the digital consumer, successfully migrated their ESB clusters to the UltraESB. Jesta Digital is behind Bitbop wireless subscription service to deliver on-demand commercial-free television and films to personal computers, tablets and smartphones, and home to a number of well-known and established brands including Jamba and Jamster, which deliver branded content, music, games and apps to millions of mobile consumers.

"In a very demanding and rapidly changing market it is of utmost importance to be able to quickly adjust the technical platform to support product innovation and change. The UltraESB was able to demonstrate to the Jesta Digital Technology team in Berlin that its simplicity, testability, extensibility and performance is made for a matching foundation" said Eric Hubert, the Executive Director of Strategy and Architecture at Jesta Digital.

On the main ESB cluster, Jesta Digital processes around 80 million messages a day with a peak 3,000 TPS across three nodes. The average CPU utilization has been just 5% with the heap memory usage at 300MB with very low GC overheads due to the efficient use of a RAM disk coupled with Zero-Copy and Non-Blocking IO. Prior to the migration, Jesta Digital customized the ESB Performance Benchmark (http://esbperformance.org) to compare the performance of the UltraESB for both SOAP and Hessian messages over HTTP/S for a sample scenario. Benchmark results similar to those published recently on the ESB Performance site were independently verified by Jesta Digital during this exercise. Furthermore the UltraESB showed extreme stability during stress tests executed over multiple days.

"We have a top notch technical team at Jesta Digital in Berlin and it was a great pleasure to work with subject-matter experts who combined first-hand knowledge, passionate work on their product and dedication to tackle the customer's challenges" said Eric.

During the migration process, AdroitLogic also worked with the Jesta Digital team to include some key features for even better enterprise deployment support. Among these is the ability to switch a live configuration with zero down time while messages are being processed. Previously servers had to be gracefully shutdown for updates, resulting in an unequal distribution of traffic across the nodes after a configuration switch, leading to connection related issues. In addition, AdroitLogic developed a feature to easily manage and monitor services and endpoints via automatic registration against a Zabbix monitoring server, using predefined or customized templates via JMX.

The UltraESB is clustered using the Apache ZooKeeper framework, and thus a single node, or the whole cluster can be managed from any of the nodes via a remote web based console, command line interface or via JMX/jconsole.

AdroitLogic was founded in January 2010 by Asankha Perera, the former lead contributor of the Apache Synapse ESB and the original architect of the WSO2 ESB. In September 2011, Ruwan Linton who initially succeeded Asankha at WSO2 as its next ESB architect, also joined AdroitLogic as its Director of Engineering. AdroitLogic published a new round of ESB benchmark results in October across 8 open source ESBs, which showed a very clear lead in performance against its competitors. In addition to performance, the UltraESB is also one of the simplest ESB's to use effectively, with support for IDE based step-through debugging, Unit testing and a light weight deployment with over 70 samples. AdroitLogic is also one of the very few - if not the only - ESB vendors that publishes code coverage statistics along with continuous builds and code quality reports publicly.

"It was a great pleasure to work with subject-matter experts who combined first-hand knowledge, passionate work on their product and dedication to tackle the customer's challenges"

Read the full Press Release and Download the Case Study on Migration to the Free and Open Source UltraESB

Past, Present and Future of ...: UltraESB Documenation

2011-10-17T03:20:00.000-07:00

AdroitLogic has released the first phase of the official documentation for the UltraESB. This documentation is a complete reference of the...
Does your ESB vendor charge you for access to Premium Content? Well, all UltraESB documentation, including our premium Production Support guides are free!

Drag-and-Drop Integration with Graphical Models and Studios - how effective are they?

2011-10-05T06:10:00.000-07:00

Recently I was asked by a prospective user about the graphical tooling support of the UltraESB, and the answer I prepared is summarized below in this blog post.

Updates to a graphical configuration is sometimes difficult
Graphical models are not easily unit testable
How do you debug graphical models?
Graphical models cannot be version controlled easily, or backed-up and restored for production system changes quickly
Graphical models does not allow easily inserted and usable comments
Graphical models are vendor specific “language”s you need to learn from the start
Text based configurations support – visual code review and auditing of changes
Real world management of graphical configurations are more difficult
Graphical tools are sometimes limited on extensibility
Vendors ship some IDE based “Studio” which may not be user friendly to some

We will consider the effectiveness of the graphical "Studios" and vendor customized "IDEs" and compare how effective they are for real world production system development, change management and auditing, code review and unit testing etc among other topics.

Now if you'd want to know what I am talking about, do a Google search for "ESB (Studio OR IDE)" and look at the results of the Image search.. You will find plenty from some ESB vendors.

In-contrast, an UltraESB configuration is held in files

In contrast, The UltraESB configurations are held in one or more configuration files. These files are human readable and understandable, and are Spring framework configuration files already familiar to many developers. Typically a configuration is split into two files namely ultra-root.xml to define the more
static aspects such as transports, JMX configuration etc, while the ultra-dynamic.xml defines the more dynamic aspects such as services, mediation sequences and endpoints of the business scenario. Where required the dynamic components can be split into any number of sub configurations.

Changes to the dynamic aspects does not require a server re-start, and can be applied to live production servers without disrupting existing or in-flight messages, and the UltraESB guarantees that a message flow will only use the configuration version available at the start of its processing. This makes the
configuration updates both safe and efficient, and is much more than whats typically offered as 'hot-deployment' by some products.

Holding the configuration in a concise XML document makes it easy to quickly:
– Understand the flow
– Take a backups
– Track changes across versions
– Add new services, change/remove/disable or co

Yet, still the UltraESB allows auto-completion and step-through debugging with your preferred IDE - See this 5 minute screen cast!

Comparison with Graphical Drag-and-Drop tools

The graphical tools will present themselves as “easy to use for any beginner” - which I do not contradict. However is its usefulness also limited when you are not a beginner anymore?

When you move into real world usage you will quickly understand that:

Updates to a configuration (e.g. disabling an address from a load balance endpoint in a production system) will require a developer to open up a heavy weight IDE Studio, open up the latest version of the project, make the necessary change, build a new deployable binary artifact and then deploy this to a production server.

When this needs to be done quickly for emergency changes etc, it would be difficult for a system administrator, or just "any" developer to do – the availability of a configured developer environment would be needed to effectively use the graphical Studios.

Furthermore, a binary deployable artifact generated by a developer would be difficult to verify for correctness. It will also depend on the developers local user settings and local properties files etc. used at the build time, and may not be the ideal artifact with the correct settings for quick production deployments.

Graphical models are not easily unit testable. Any UltraESB configuration can be easily unit tested with popular frameworks such as JUnit. Most of the samples we ship are automatically unit tested for each continuous build.

Check our unit tests here, or take a look at one single sample test here

As an exercise: Ask any other ESB vendor how they suggest that you perform unit testing, and automated end-to-end configuration testing. Try out their suggestions by yourself, and verify how effectively they will work in your real world use

Graphical models cannot be version controlled easily / Cannot backup and revert production system changes quickly. They will either use binary artifacts, or generate loads of meta XML which cannot be humanly understood, backed up or safely managed via a source control system for historical difference checking.

As all UltraESB configurations are simple and human readable and understandable XML files, changes can be checked into any version control system such as CVS, SVN, Mercurial, GIT etc, and tagged after development for QA testing, staging and production deployments. This allows one to quickly undo changes to revert back to a previous configuration level within a matter of seconds.

Here is a sample diff for you to verify which shows some changes over time on a UltraESB configuration. Our large enterprise users integrate the ESB configuration into version control systems for better management, visibility/openness and control of changes and auditing.

The UltraESB conf/ directory is typically checked into a version control system. When developers make changes they can commit locally (i.e. with Mercurial etc) and when ready push changes for QA / integration testing. Once changes are accepted for deployment, they would then be tagged by QA. The operations teams would map the source repository to the conf/ directory of the live servers, and to deploy changes, they would pull changes from the source repository. Depending on the change, a simple UTerm “cau – Configuration Add or Update” command or a graceful restart (e.g. if third party JARs etc are required for a new change) can then be initiated. Before updates, the configuration can be easily backed up, and if something goes wrong, the configuration can just as be easily reverted to the previous tag or restored configuration file which was backed up before.

Graphical models does not allow easily inserted and usable comments. Some comments on graphical models maybe hidden as meta information in the huge models. They are not seen at all, or are rarely seen on a production configuration etc. Some models may not allow you to save user specified comments, or loose them during editing even when inserted manually. See how you can comment the UltraESB configurations here
Graphical models are a vendor specific “language”. Yes, your team still needs to learn a new language, refer to its documentation from how to write an “if” condition, and understand which component can be added under or connected to which other. The UltraESB is configured with Java code fragments, classes, or compiled class libraries. In addition, you may use any JSR 223 scripting language such as Javascript, Groovy, Ruby etc which you already know.

As the UltraESB configuration is in Java, you can use concepts you already know such as:
Exception handling with a try-catch-finally
Easily refer to all possibilities of the API using Javadocs
Easily calling external libraries from within the in-line code you are writing etc. (Compare to calling an external Java library from one of the graphical models)

Real world management of graphical configurations are more difficult. Imagine having to make a change to an endpoint URL across hundreds of services. With a graphical model, one would need to load each service and make the necessary changes, save and rebuild deployable artifacts for re-deployment. With a text based configuration you can easily use find-and-replace, sed, grep, find etc to quickly find certain values, or make changes across multiple services easily.
Text based configurations support – visual code review and auditing of changes
Graphical tools are sometimes limited on extensibility. You cannot easily extend the components available, or develop custom components. Even if you could, as an end user you would be writing an ESB vendors specific UI logic on your developers' time to build such extensions, which may break with new vendor releases etc. If you just concentrate on your business logic, you could write any extension as a Java library etc, and reuse the method from within the UltraESB from multiple locations.

Furthermore, some tools may not allow you flexibility. As an example, consider you are getting a message header “XXX-NNN-YYY” and you want conditionally perform a routing just looking at the “NNN” part. If your graphical editor provides a “if-then-else” construct, most definitely if will allow you to check if this complete header is equal to something or not. (See example screenshot). However, your mind will tell you that you just need to perform a substring(4,7) on the header and do the comparison. This is easily possible with the UltraESB configuration, where-as fixed UI “components” of most vendors would not allow you to go deeper than the beginner level use.

Vendors ship some IDE based “Studio” which may not be user friendly to some. Most vendor studios are based on Eclipse or other such frameworks, and may not be easy for use for IDEA, NetBeans and other IDE users. The UltraESB allows its users to use any of their preferred IDEs.
How do you debug graphical models? Usually, studios hide the actual execution code with very high level constructs, and hence users ultimately ends up using the log files for debugging which is sad. You cannot easily set a breakpoint at one of the nice graphical boxes, and evaluate message properties at the time a message reaches it. You cannot then step-through debug the configuration from there on.

With the UltraESB, you are at the actual execution code level. You can set real breakpoints, evaluate variables, and step-through debug as you've always known with your favorite IDE. Ofcourse, you can start the ~35 MB UltraESB within the IDE in its full glory, so you do not end-up having to remotely debug a monster server running with elsewhere.

ESB performance testing - Round 5 Results for 8 Open Source ESBs

2011-10-04T09:16:00.000-07:00

AdroitLogic Private Ltd. announced today the results of the fifth round of ESB Performance testing. This round compares the WSO2 ESB, Mule ESB CE, Fuse ESB, Apache ServiceMix, Talend ESB, Petals ESB, JBoss ESB and the UltraESB. The ESB performance benchmark has been in use since June 2007 by vendors such as WSO2, AdoritLogic, Mulesoft and BEA to compare ESBs across different loads and message sizes for six common use cases. This round also publishes an EC2 AMI to easily reproduce the results by average users, and also publishes all source configuration for the 8 different ESBs in a public BitBucket repository

What's significant about this test suite is that it has now been accepted as a de-facto ESB performance test suite by vendors such as WSO2, BEA and Mulesoft in the past, who have reported results against their implementations publicly. This has also been used extensively by end users for ESB comparison, and load testing of configurations before production deployments.

Although 8 open source ESBs were considered, 4 of these failed without being able to complete the load test. One ESB had a 3-4% error rate, while three completed successfully. The test includes two variants of the free and open source UltraESB. The enhanced version is supercharged with the power of VTD XML which allows the UltraESB to perform XPath evaluation on XML payloads without XML parsing. This works nicely with the RAM Disk based file cache used by the UltraESB to provide both Zero-Copy and Java Non-Blocking IO for the extreme levels of performance.

Full information available at http://esbperformance.org

Former WSO2 ESB and Apache Synapse ESB Architect Ruwan Linton Joins AdroitLogic

2011-09-13T03:54:00.000-07:00

It gives me great pleasure to announce that Ruwan Linton has joined AdroitLogic!

Ruwan was the former architect and product manager of the WSO2 ESB, taking over the position when I left WSO2 in October 2008. We've worked in the past together for over 2 years and contributed over 80% of the Apache Synapse ESB which is also the core of the WSO2 ESB.

Ruwan is a brilliant architect, and a good friend. We both understand each other perfectly well, and thus he will be a great addition to AdroitLogic as its new Director of Engineering!

Here is the full press release: Former WSO2 ESB and Apache Synapse ESB Architect Ruwan Linton Joins AdroitLogic

ESB Performance Testing.. Getting ready for the next round

2011-08-08T02:41:00.000-07:00

Its been sometime since we've compared the performance of free and open source ESBs.. and now its time for the next round..

Amazon EC2 AMI to be published!
At the end of this round, we will publish an Amazon EC2 machine image (AMI) with the selected ESBs so that any end-user can simply fire up an instance of this image, and re-run the performance suite to compare the ESBs of his choice!

This will also make it easier to extend the performance test to include any custom test cases of the user etc, before selecting an ESB for use. But most of all, it will allow a true apples-to-apples comparison of the ESBs of choice, without any vendor bias, as each ESB could be tested on the same EC2 instance, and only allowed to talk to itself on the localhost - preventing a requirement for stringent network isolation.

In the past different vendors used the performance benchmark on different hardware configurations, and also it was not easy for a newbie to re-run the test suite on his own without investing some time to learn things and setup the various ESBs. However, the soon to be published EC2 AMI will contain everything required to fire-up the different ESB's of choice - preventing anyone from having to spend hours to learn and set-up the different ESBs for comparison. A vendor or another end user can also modify the configurations of the ESBs to better tune them, and republish the new image again, making the process simpler and easier for everyone!

The free and open source ESB's evaluated in this round include:

UltraESB v1.5.1
WSO2 ESB v4.0.0
Mule CE v3.1.2
ServiceMix v4.3.0

It has not been easy to set-up all these different ESB's, and we've found that its pretty difficult to get some of the ESB's to execute all test scenarios.. More on this will be published soon as we try to overcome these difficulties.. so stay tuned!!

If you would like any other ESB to be included into this round, do let us know, and share a compatible configuration.

Visit the ESB Performance site for more details..

AdroitLogic announces v1.5.0 of the UltraESB

2011-07-20T09:06:00.001-07:00

"The latest version brings support for Command Line Interface for management, improved JMX support, and integration with monitoring solutions and a high performance RAM disk based file cache.."

Read the full story at http://adroitlogic.org/about/news.html

To build the best ESB, you have to select the best open source components too!

2011-05-06T02:47:00.000-07:00

If you've ever wondered how we build the worlds best Free and Open Source ESB, in terms of performance, features and ease of use; then read about it all on Thanking great Open Source projects and teams!

To build the best Open Source ESB, we *had* to select; and only depend on; the best Open Source components - and not the old cupboards or the stinking kitchen sinks, that some vendors cannot yet entangle themselves from!

Did I mentioned that our complete distribution is just ~35MB? Compare it to some others who call 135MB upto ~1G ESB's as light. I guess after putting lipstick on the Pig, they now like to call it "light-weight" like a damsel too ;) But sadly, some are still stuck in the days of hub-and-spoke messaging, and some made the whole world around them too SOAPy and slippery too soon as they didn't take enough REST at the right time.

Being the youngest ESB in town, and to Win! - we had no choice but to select the best technologies and open source projects that we would depend on and use.

Introducing true Zero-Copy proxying, with memory mapped files and Non-Blocking IO was killer in performance. Some even tried to copy the keywords without implementing the code, and even without understanding what Zero-Copy was :)

We also introduced the concept of using Java (classes or just fragments) or any JSR 223 scripting language (such as Javascript, Groovy, Ruby) for mediation. Although many vendors falsely claim that their ESB is "configuration" only - the configuration language they use is no different from a programming language. However, someone new must learn that "XML"ish language to "program business logic" - and no one is going to tell him the equivalent of a try {} catch {} finally block that can be reliably used in that context :)

Our approach was to let the user decide the way he is going to mediate, using a language and/or technologies he is already aware of. But unlike some ESBs where you write Java code, then use some script to compile, bundle and deploy - the UltraESB just requires you to write the lines - and the compilation is hidden! You can even debug your mediation from within your favourite IDE - either IDEA, Eclipse or Netbeans.

When we wanted to introduce clustering almost an year back, we looked at Apache ZooKeeper and knew at first sight that it was the right one for us - call it link at first sight ;) !

Selecting a UI framework was the most time consuming.. and we looked at GWT based, and other frameworks, based on the servlet model but did not find the right balance. We wanted to use the best of HTML5/CSS3 and be in control always.

The combination of HTML5/CSS3/JQuery/datatables - connected via JSON using Pure - to a Wink REST application secured by Shiro and implemented via JMX with direct calls to the remote ESB was one of the main introductions in this last release! But it was all worth it! Except for a few issues on the IE browser (which statistically a lot fewer people use now) everything has been smooth. But we will follow up a 1.4.1 release with these fixes for IE too.

UltraESB Code Quality Metrics - updated for v1.4.0

2011-05-05T10:52:00.000-07:00

We've updated the code quality metrics for the free and open source UltraESB v1.4.0 release recently, and our glad to still have a 43.3% code coverage (46.1% of the lines and 36.2% of branches) and 15.5% of code comments (46% documented API)

The total lines of code increased to 33,563 spread over 69 packages and 426 classes, with v1.4.0 which introduced the web based administration console - UConsole, support for clustering, automated round-robin restarts, XACML and even faster XML performance with FastXML

By building each sample as both an end-user executable, and documented sample, as well as a JUnit test case has paid a lot. AFAIK we ship the most number of samples for any ESB with 48 sample configurations with over 100 sample proxy services!

UConsole - the node/cluster management console of the UltraESB

2011-05-03T19:20:00.000-07:00

Sampath has published a detailed article on the architecture of the UConsole with a brief introduction to some of its functions. The UConsole is an ultra light-weight Jetty based web application that uses HTML5/CSS3 to render the pages. All front end pages and scripts thus can be safely cached by a browser, and all pages fetch data over a JSON API exposed by a REST application deployed using Apache Wink.

The UConsole is the graphical management console, to the re-vamped JMX based UltraESB management API using MXBeans. Thus any function that can be monitored or performed via the UConsole, can be performed via JMX too.

One neat aspect of the UConsole is the ability to connect to any node via its JMX URL. So when you connect to a cluster, you can connect to any single node of the cluster. Apache ZooKeeper ensures that you can perform any cluster wide function from any connected node. There is no "administration server", master or slaves, or any single point of failure!

We intend to develop a command line administration interface over the JSON/REST API in future, when it will add value to the product.

AdroitLogic announces v1.4.0 of the UltraESB

2011-05-02T09:58:00.000-07:00

The latest version brings support for clustering using ZooKeeper, and introduces a web based administration console, and support for Caching, XACML and JSON among many other features.

Singapore - May 2, 2011 - AdroitLogic Private Ltd. announced today the release v1.4.0 of its free and open source Enterprise Service Bus, the UltraESB. The UltraESB is released under the OSI approved GNU Affero General Public License; as well as a zero-dollar non-GPL commercial license which allows unlimited and perpetual use free of charge. First released in January 2010, the UltraESB was the first ESB to utilize memory mapped files and zero-copy, coupled with non-blocking IO to provide extreme levels of performance.

Version v1.4.0 released today offers support for clustering and management of cluster nodes through the new Web based administration console based on JMX. Clustering support is built over Apache ZooKeeper, which is used to manage extremely large clusters of Hadoop nodes. Advanced features such as automatic restart of a complete cluster of nodes - with round-robin processing, or management of a service, or endpoint across a cluster have been made trivial operations. The new version also supports caching, and the current release ships support for ehCache. The new release also ships support for high performance XML processing, utilizing FastXML. This allows end users to integrate third party libraries such as VTD XML with the UltraESB for extremely fast XPath processing, without parsing XML payloads. XACML is supported for fine grained authorization using the PicketBox XACML library, and automatic conversion to/from JSON to XML makes processing JSON payloads even simpler.

In addition to supporting many transports and message formats, the UltraESB also offers support to easily develop JSON based data services with just a single line of configuration, and provides full support for the HTTP transport, including true REST support, basic, digest, NTLM and Amazon S3 authentication using pre-emptive authentication or challenge response mechanisms as applicable. The UltraESB also ships a very high performance WS-Security library that allows it to perform WS-Security operations over 3X faster than solutions based on the WSS4J/Rampart libraries used by other ESBs.

JMX support has been thoroughly improved to utilize MXBeans, and allows detailed monitoring and management of a runtime using JMX consoles such as Zabbix. The UltraESB now ships with a native Zabbix agent for even easier monitoring. As the UltraESB integrates with the Spring framework and supports Java as well as JSR 223 scripting languages, integration with third party libraries and extension is simple and powerful.

UltraESB v1.4.0 development builds are available for feedback!

2011-04-06T12:52:00.000-07:00

Checkout the new blog [http://blog.adroitlogic.org] which describes some of the new features of the upcoming v1.4.0 - including clustering, caching, configuration changes at runtime, XACML and many more!

Mulesoft publishes new results against the ESB Performance Testing Framework

2011-01-25T23:49:00.000-08:00

Mulesoft recently published new results on the performance of the Mule ESB v 3.1 over Mule 2.2.7 benchmarked in July 2008.

"Mule 3.1 performance is in average 10% better than its predecessor version 2.2.7, performing better when the number of concurrent consumers gets bigger and much better when dealing with XSLT transformations (around 15% better)."

A clear difference from the previous results from Mulesoft is that they are only testing concurrency levels of 20,40,80 & 160 this time, while dropping the 320, 640, 1280 and 2560 concurrent user test scenarios from this round! They have not published results against the 100K message sizes either - or for the WS-Security test case introduced by AdroitLogic last February [See http://esbperformance.org].

Its interesting to note both Mule and WSO2 now follows a pattern of performance testing only against previous versions of their own ESBs - when previously both published performance figures over each other; other open source ESBs and even commercial equivalents.

AdroitLogic first published the figures for its UltraESB in February 2010, and took a decision to compare its performance against competition - but not to release the names of the other products tested. Instead, it ships the complete ESB Performance Test Framework including scripts to run and convert results into CSVs, so that an end user can easily compare its performance against virtually any other comparative ESB (even commercial alternatives) on an exact same hardware and software configuration for a true apples-to-apples comparison.

Enterprise Service Bus [ESB] Comparison: Poll a directory for a file and upload it with an ...

2010-12-17T11:23:00.000-08:00

Enterprise Service Bus [ESB] Comparison: Poll a directory for a file and upload it with a HTTP PUT: "Here is an example of a File polling service, which then sends the file to an authenticated HTTP service as a PUT request"

What happened to the Cat set amongst the Pigeons? - ESB Performance comparison

2010-12-06T21:37:00.000-08:00

WSO2 Published an article titled "WSO2 ESB Performance (New)" today, after 2 and a half years since the last article on ESB performance - published in June 2008.

What's interesting to note is that unlike in the last three rounds of performance testing since June 2007, WSO2 does not compare its numbers against those of any other ESB.

The last time WSO2 published performance numbers, its CTO Paul Fremantle wrote the blog post Setting the Cat amongst the Pigeons stating "Now, I'm hoping the Mule guys will get their act together and provide a decent contest, because we couldn't get Mule to do HTTP KeepAlive without failing"

Previously WSO2 compared its performance against a proprietary ESB, Mule, and ServiceMix. A complete list of resources, and tools were shared under an Apache License to encourage other ESB vendors to run the same tests which were "fair" and open.

The folks at Mule did take the challenge, and published an article that showed performance of the Mule ESB, although it was not a true apples-to-apples comparison.

This time, WSO2 has not shared the configurations or the resources either, and for some unknown reason, have explicitly turned off HTTP keep-alives which generally improves performance. They compare against the WSO2 ESB v2.1.3 - which incidentally was not benchmarked publicly at any point in the past. Hence a 'comparison' becomes meaningless, irrespective of the fact that in quite many scenarios, the performance of the v3.0.1 has indeed decreased!

Note that on earlier occasions concurrency levels from 20, 40, 80, 160, 320, 640, 1280, 2560 were run, with each selected message size. However, deviating from this "fair" and "open" norm, this time a different approach was taken: "For each scenario each message size load is generated with concurrency varying from 20 to 300(increasing by 40 at each stage). Then the maximum transactions per second(TPS) achieved during this concurrency range is recorded as the Transactions per second(TPS) for the corresponding scenarios message size."

This begs the question - did the WSO2 ESB v3.0.1 crash after 300 concurrent users? when previous versions could handle up-to 2560 concurrent users??

I guess like some "other" companies that grows too large these days, WSO2 has finally closed its openness on the performance benchmarking as well. Its refraining from publishing any comparisons, as it cannot compare against the Free and Open Source UltraESB from AdroitLogic, which introduced Zero-copy proxying coupled with Java NIO for extreme performance levels, not yet achieved by others - although some have tried to.

AdroitLogic published performance metrics of the UltraESB in February 2010, and launched the ESB Performance site http://esbperformance.org to ensure that a "open" and "free" ESB Performance Benchmark will be available for anyone. The UltraESB "ships" this complete benchmark in its 30MB download - and makes it easy for anyone to compare the performance of the UltraESB with any other ESB - on any selected hardware and environment under "identical conditions"!

Finally, I know that WSO2 ran these tests over 4 months back, and since then they have possibly been busy to find a way to publish these results with minimum damage..

But I guess the Cat set amongst the Pigeons - is now no more! ..
and now, I'm expecting some fireworks!!

"The UltraESB environment was a much cleaner solution for putting together the mock services, particularly with the IntelliJ IDE for writing the code"

2010-10-26T22:20:00.000-07:00

Read the Original Comment from Jim

"Note that the leading tool for Web Services testing is SoapUI. While this product provides some powerful support for Soap based mock services, its support for REST based mock services is almost non-existent (basically, just setting up a separate test case for each endpoint and sending a file). The UltraESB environment was a much cleaner solution for putting together the mock services, particularly with the IntelliJ IDE for writing the code. I could load the payload, read it into a string, manipulate it, the write it back out to the payload. The learning curve was very minimal. Great job!"

The UltraESB recently started supporting RESTful JSON Data Services more information on the JSON support is available from http://jsonesb.org

JSON Data Services

2010-10-24T09:27:00.000-07:00

Want to specify an SQL statement and a corresponding URI pattern, and create a RESTful JSON Data Service with just one line of configuration?

The Free and Open Source UltraESB v1.3.0 introduces JSON Data Services which does exactly this! Create data services by specifying a SQL file and a URI pattern. The URI patterns allows you to specify variables, that correspond to the SQL statement as shown in the following example.

For example, say that you would like to expose the result of the SQL query:

SELECT * from employee where permanent = 1

and would like the Data Service to be available at URI:

/getPermanentEmployees

Or to consider a more advanced example, say that you wish to expose the results of the SQL:

SELECT * from employee where
    division = :division and department = :department 
    and sex = :sex and age > :age

and expose the Data Service with a URI as follows:

/byDeptAndDivision/<department>/<division>?age=<age>&sex=<sex>

See how easily you could create RESTful JSON Data Services using the UltraESB and a couple of lines of configuration in "JSON Data Services" published on the AdroitLogic web site.

Transactions spanning multiple resources - an Example with JMS, JDBC and File systems with JTA

2010-10-19T10:31:00.000-07:00

We've written a sample that shows use of multiple JTA transactions spanning JMS, JDBC and File system resources. The sample is a solution in reply to a real user question as presented here.

The solution is presented using the Atomikos JTA libraries that allows the execution of the sample without deploying the UltraESB on a JEE application server such as JBoss. The original post requested for a sample using WebSphere MQ, and Oracle as the database, on top of JBoss.

The sample we've implemented uses an "embedded" ActiveMQ JMS server - started with just a couple of lines of Spring configuration within the UltraESB. The complete mediation is just a few lines of extremely powerful code - using the robust Spring framework JDBCTemplates. This coupled with the use of Java allows one to write powerful integration scripts, with the full power of the Java programming language or any other JSR 223 scripting language such as Ruby, Groovy, Javascript etc., without learning vendor or product specific configuration languages based on XML.

The sample shows the happy day scenarios as well as rollback of transactions, using the SOA ToolBox to fire sample JMS messages for testing.

Download Email and save attachments into the file system - Compare the UltraESB with Mule

2010-10-13T02:08:00.000-07:00

For over two weeks, a user on the Mule mailing list has been looking for a way to download Email messages over POP3/IMAP and save attachments into the file system. However, as of today, the last post indicates a blocker issue MULE-5138 which needs a solution before IMAP maybe used..

I've written a simple solution over the Free and Open Source UltraESB to do the same, and it works well, and easily, with only a few lines of configuration as presented in the new ESB Comparison blog article titled "Download Email and save attachments into the file system". This example will be available as Sample #503 with future versions of the UltraESB

Web Service Proxy that emails a copy of the response passing through, using an intermediate JMS Queue

2010-10-11T22:57:00.000-07:00

I've written an article that describes how an UltraESB Proxy Service for a SOAP service could be deployed on the Free and Open Source UltraESB, to respond back to the client immediately once the response becomes available, but then post a copy of the response via an asynchronous email - without affecting the performance of the main message flow.

This was a request for an initial proof-of-concept for a large Telecom company in the US, and shows how an embedded ActiveMQ JMS server could be started within the UltraESB using the native support for the Spring Framework

Read about it at DZone http://soa.dzone.com/news/web-service-proxy-emails-copy

This sample is now included as sample #502 with the UltraESB 1.2.0 or later

WSO2 falsely claims support for Zero copy

2010-09-14T05:09:00.000-07:00

A few minutes ago, Asanka Abeysinghe the Director of Solutions Architecture of WSO2 claimed that the WSO2 ESB supports "Zero Copy", at the WSO2Con held in Colombo, 14th September 2010

However, this statement is false, and can be easily proved by just looking at the implementation source code of the BinaryRelayBuilder, which copies the complete input stream into a byte[] in Heap memory via traditional CPU copying into user space.

In-fact, when WSO2 announced this "Binary Relay" in December 2009, even the author of this "feature" did not state that its anything near "Zero Copy". Even a search on Google for WSO2 and Zero copy returns no results!

"Zero-copy" describes computer operations in which the CPU does not perform the task of copying data from one memory area to another." - Wikipedia

The AdroitLogic UltraESB is the FIRST and still the ONLY Open Source ESB (or most possibly "the only ESB") that supports True Zero-Copy proxying.

Thats why its the fastest ESB out there!

AdroitLogic Open Sources the High Performance and Lightweight Enterprise Service Bus - UltraESB

2010-08-24T03:58:00.000-07:00

UltraESB is the first Open Source Enterprise Service Bus (ESB) to utilize Zero-copy proxying with Memory Mapped files and Java Non-Blocking IO for extreme performance.

AdroitLogic Private Ltd. announced today that it is open sourcing the code of its Enterprise Service Bus the UltraESB, under the GNU Affero General Public License. The UltraESB first announced in January, becomes the first Open Source ESB to claim support for Zero-copy proxying of requests with Java Non-blocking IO and Memory Mapped files to support extreme levels of performance. AdroitLogic also released the code of a Web Services Security library 'SoapBox', that was custom built by them for use by the UltraESB, which performs about 4 times faster than solutions based on the Apache WSS4J/Rampart frameworks. This support combined with SSL, HTTP Basic/Digest and other authentication methods makes the UltraESB an ideal platform to implement a Security Gateway for hosted services.

The UltraESB supports legacy transports such as JMS, File, S/FTP, FTPS, Email(POP3/IMAP/SMTP), Database, B2B AS2 (Applicability Statement 2), MLLP/S and TCP/S in addition to HTTP/S, and handles messages in their native formats without any conversions into an intermediate format. It supports REST, EDI, SOAP 1.1/1.2, POX/XML, Hessian, JSON, Health Level 7 (HL7), Binary, Text, CSV, HTML and many other message formats. The UltraESB supports JTA XA transactions, including asynchronous suspend and resume, and can be deployed standalone or within a JEE Servlet container such as Tomcat.

"The UltraESB is a complete new ESB written from scratch. Thus we were able to improve the performance and ease of use phenomenally by using techniques such as Java 6 support for compilation, NIO and Zero-copy proxying with Memory Mapped files. We base the core engine on a very few and stable libraries, and are extremely careful about good design and coding practices” said Asankha Perera the founder of AdroitLogic. Asankha earlier contributed most of the code of the Apache Synapse ESB which formed a basis for other open source ESBs as well as Security Appliances.

The UltraESB includes a Performance Benchmarking Framework to compare its performance against other ESBs on identical conditions. More information about this framework can be found at the ESB Performance website.
The UltraESB is configured with one or more XML files that allows mediation code to be written as fragments of Java, or JSR 223 Scripting languages - such as Javascript, Groovy, Ruby etc. Mediation logic can also be written as Java classes or POJOs, without depending on any specific interfaces. This ensures that the users do not have to learn yet another programming or XML configuration language; or compile-bundle-and-deploy artifacts for configuration changes to take effect.

"The UltraESB is very easy to use. The learning curve is minimal since it's based on Java and Scripting languages. The support is great, and the performance, exceptional!" said Shalinda Ranasinghe, Chief Software Architect of ShipXPress Inc. The configuration could be performed within an IDE of the users' choice that supports intelligent context aware auto completion, and step-through debugging. The UltraESB supports JMX management and reporting with standard JMX consoles, and is about 30MB to download inclusive of many samples.

Availability and Support
The UltraESB is available for download under the GNU Affero General Public License (AGPL); and under a Free Commercial License allowing unlimited and perpetual use. Custom paid licensing options are available for users who wish to embed the UltraESB into proprietary applications. AdroitLogic offers world-wide production support, consultancy, training, development support and custom development for the UltraESB.

A 5 Minute Screencast to get Started!

Invoking a Web service and receiving its response via email

2010-07-08T11:38:00.000-07:00

I've written a simple example that shows how a Gmail account could be polled by the UltraESB and then forward them to a Web service. The example invokes the SimpleStockQuoteService hosted via the test ToolBox.

The UltraESB makes it easy to strip all unwanted email headers, and then send the request as a SOAP request by updating the content type to text/xml. The response is then sent back to the original client using Gmail SMTP

Read the full example and download the sample configuration files from here

HTTP Basic, Digest and Amazon S3 REST authentication

2010-05-30T19:30:00.000-07:00

Secure your backend services using Basic Authentication or Digest Authentication over HTTP or HTTPS with a Proxy service deployed on the UltraESB. The credentials are verified using any Spring Security based authentication providers - including in-memory, Database, LDAP etc. The article presents the ready-to-run Sample #110 of the UltraESB that demonstrates many scenarios to secure, and to invoke secured services! The highlight of the article is a proxy service that could be used to authenticate into Amazon S3 using its REST API. A follow up article will soon demonstrate how a fixed-length COBOL file is polled from a directory or sftp, ftp/s, converted into XML and uploaded into a S3 location.. keep tuned!

HTTP Basic, Digest and Amazon S3 REST authentication