All Things WebSphere
Concerns and issues relating to all versions of WebSphere Application ServerThursday, May 31, 2012
WebSphere Application Server V8.5 delivers a faster, flexible development environment with new intelligent management capabilities for enhanced resiliency
The next version of WebSphere Application Server has been announced. At a glance Enhancements in V8.5:
- The new Liberty profile option is a highly composable, fast to start, and ultra lightweight profile of the application server and is optimized for developer productivity and web application deployment.
- Application Edition Management enables interruption-free application rollout. Applications can be upgraded without incurring outages to your end users.
- Health Management monitors the status of your application servers and is able to sense and respond to problem areas before end users suffer an outage. Problem areas include increased time spent on garbage collection, excessive request timeouts, excessive response time, excessive memory, and much more.
- Intelligent Routing improves business results by ensuring priority is given to business critical applications. Requests are prioritized and routed based upon administrator defined rules.
- Dynamic Clustering can dynamically provision and start or stop new instances of application server Java™ Virtual Machines (JVM) based on workload demands. It provides the ability to meet Service Level Agreements when multiple applications compete for resources.
- Enterprise Batch Workload support leverages your existing Java online transaction processing (OLTP) infrastructure to support new Java batch workloads. Java batch applications can be executed across multiple Java Enterprise Edition ( Java EE) environments.
- IBM WebSphere SDK Java Technology Edition V7.0 as an optional pluggable Java Development Kit (JDK).
- Web 2.0 and Mobile Toolkit provides an evolution of the previous Feature Pack.
See the announcement in detail here
If you prefer downloading a pdf. checkout
Thursday, May 24, 2012
JSF vs Wicket Performance web framework performance
Interested in improving JSF performance or looking at JSF performance under the hood take a look at
http://www.scribd.com/doc/94007042/Performance-Comparison-Leonardo-Uribe-FINAL-Detailed
From Leonardo Uribe
To show how good was the improvements done, an in-deep comparison was done between JSF 2 and Wicket. The code, detailed documentation, experimental data and all related information is available here:
http://lu4242.blogspot.com/
Source code, experimental data and other goodies:
https://github.com/lu4242/
Detailed document:
http://www.scribd.com/doc/
This results were part of the CONFESS 2012, celebrated some weeks ago.
http://www.con-fess.com In the session called "MyFaces -50% RAM".
Friday, May 18, 2012
WebSphere Application Server Top 10(+2) Tuning Recommendations
One of the most popular sessions at IMPACT 2012 was tuning recommendations for WebSphere Application Server. These are the top 12 tuning recommendations for WAS
#12 - Choose and Tune the Caches Correctly
#11- Understand and Follow Multi-core & Virtualization Guidelines
#10 - Properly Tune the Operating System
#9 – Keep Application Logging to a Minimum
#8 – Understand and Tune Infrastructure
#7 – Minimize HTTP Session Content
#6 – Correctly Tune Thread Pools
#5 –Tune JDBC Data Sources
#4 –Create Cells To Group Similar Applications
#3 – Ensure Uniform Configuration Across Like Servers
#2 – Correctly Tune The JVM
#1 – Perform Proper Load Testing
For more information request for the slide deck from your local IBM rep.
How to speed up annotation processing in WAS V7/V8
There are a number of options to speed up annotations processing -
Those are mentioned in this technote...
1. Specify metadata-complete="true" in the Deployment Descriptor. This means that NO annotation scanning will take place.
2. Move 3rd party jars that don't need to be scanned for annotations outside of the EAR into a Shared Lib,
3. Specify 3rd party jars (from Spring and Hibernate) in the amm.filter.properties file.
http://www-304.ibm.com/support/docview.wss?rs=180&uid=swg1PK87053
4. Utilize echniques listed in the blog post on Performance considerations for deploying very large Java Enterprise Edition (JEE) applications
http://wasdynacache.blogspot.com/2011/05/websphere-application-server.html
5. Reducing annotation searches during application deployment
http://pic.dhe.ibm.com/infocenter/wasinfo/v8r0/index.jsp?topic=%2Fcom.ibm.websphere.nd.doc%2Finfo%2Fae%2Fae%2Ftrun_app_reduce_annot.html
6. org.eclipse.jst.j2ee.commonarchivecore.FILTERBINARIES - A custom property that provides a list of files and directories that should not be processed as a part of the server start process.
Tuesday, May 15, 2012
Java EE & OSGI vs Spring Framework Resources
Provided below are excellent blogs, articles and videos that assist in migrating from the Spring Framework to Java EE and OSGi
Why is Java EE 6 better than Spring ? By Arun Gupta
https://blogs.oracle.com/arungupta/entry/why_java_ee_6_is
Why I will use Java EE (JEE, and not J2EE) instead of Spring in new Enterprise Java Projects in 2012 By Kai Wahner
http://www.kai-waehner.de/blog/2011/11/21/why-i-will-use-java-ee-jee-and-not-j2ee-instead-of-spring-in-new-enterprise-java-projects-in-2012/
Spring to Java EE Migration By David Heffelfinger
Part 1 http://www.oracle.com/technetwork/articles/java/springtojavaee-522240.html
Part 2 http://www.oracle.com/technetwork/articles/java/springtojavaee2-1414289.html
Part 3 http://www.oracle.com/technetwork/articles/java/springtojavaee3-1569377.html
Spring to Java EE – A Migration Experience By Lincoln Baxter III
http://ocpsoft.org/java/spring-to-java-ee-a-migration-guide-cdi-jsf-jpa-jta-ejb/
Free videos on Spring to Java EE migration on http://parleys.com
Migrating Spring to Java EE6 http://www.parleys.com/#st=5&id=2749&sl=1
JavaEE vs Spring Framework shootout http://www.parleys.com/#st=5&id=2819&sl=0
Migrating Spring Applications to Java EE 6 – By Bert Ertman and Paul Bakker of Luminis
Part 1 http://howtojboss.com/2012/04/17/article-series-migrating-spring-applications-to-java-ee-6-part-1/
Part 2 http://howtojboss.com/2012/04/17/article-series-migrating-spring-applications-to-java-ee-6-part-2/
Migrating from the Spring Framework to OSGi - By Valentin Mahrwald, Tim Ward, Zoe Slattery
http://www.ibm.com/developerworks/websphere/techjournal/1103_mahrwald/1103_mahrwald.html
Using Spring and Hibernate with WebSphere Application Server - By Tom Alcott & others
http://www.ibm.com/developerworks/websphere/techjournal/0609_alcott/0609_alcott.html
Monday, May 14, 2012
IMPACT 2012 Presentations
1163 Java EE vs. Spring Framework Shootout
ROHIT D. KELAPURE, IBM
Session Code: TDP
Program: Technology
Track: Application Development
Subtrack: Java Development and Programming Models
Session Type: Lecture
Level: Intermediate
This session compares the Spring and Java EE stacks in terms of Web frameworks. It re-examines the motivations behind the Spring framework and explores the emergence of the Java EE programming model to meet the challenges posed. The presentation provides insight into when Spring and/or Java EE is appropriate for building Web applications and if they can coexist.
1167 Patterns and Best Practices for Contexts for Dependency Injection
Speaker: ROHIT D. KELAPURE, IBM
Session Code: TDP
Program: Technology
Track: Application Development
Subtrack: Java Development and Programming Models
Session Type: Lecture
Level: Intermediate
Program: Technology
Track: Application Development
Subtrack: Java Development and Programming Models
Session Type: Lecture
Level: Intermediate
As the adoption of the Contexts for Dependency Injection (CDI) for Java Enterprise Edition Application Programming Interfaces grows, it is important to understand how to use CDI effectively to maximize the benefits of using a loosely coupled, type-safe, annotation-driven dependency injection solution. This session will cover best practices for using CDI, such as annotations versus XML, @Named as a qualifier, qualifier type safety versus verbosity, effective use of producers/disposers, using scopes properly, best practices for using conversations, defining effective stereotypes, interceptors versus decorators, static versus dynamic injection/lookup, using alternatives, CDI versus Java EE resource injection, using CDI with Enterprise JavaBeans (EJB) 3.1, CDI/Java Server Faces (JSF) 2 integration patterns, and CDI/Java Persistence API (JPA) 2 usage pattern
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