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Create REST
-enabled Web Apps
with Project Zero
from IBM.
Terracotta:
Scale your
Apps w/ease
Offload the DB:
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IBM WebSphere
Virtualize apps
to lower costs,
Increase agility
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Posted by Craig Wickesser on May 12, 2008 05:56 PM
VisualVM is an OpenJDK project from Sun to create an all-in-one troubleshooting tool for Java applications. The tool is a combination of several existing tools and newer profiling capabilities such as jvmstat, JMX, Attach API and others. VisualVM can be run as a stand alone application or extended using it's robust API.
On the Java SE for Business Features and Benefits page VisualVM is described as a tool that can,
Track down the root cause of reliability, availability, or scalability issues in your deployed applications faster and easier than ever before.And according to the VisualVM project site,
This tool is designed for both production and development time use and further enhances the capability of monitoring and performance analysis for the Java SE platform.
At the time of this writing VisualVM 1.0 RC1 is available for download with an official 1.0 release expected in the summer of 2008, according to Thomas Hurka, lead developer on VisualVM. It includes support for JDK versions 1.4.2, 5.0 and 6.0, although JDK 6.0 is the most featureful. Some of the features provided include:
VisualVM uses different technologies to get data from JDK (jvmstat, JMX, Attach API, Serviceablity agent). If technology is not available on particular JDK or operation system, VisualVM features, which relies on such technology, are not available.Additionally, VisualVM is "pluggable". It includes several plugins which allow it to monitor, manage and troubleshoot applications deployed to GlassFish, as well as other plugins to make it easier to work with the API in NetBeans (nbproject plugin).
An all-in-one open source troubleshooting solution from Sun helps show their commitment to the Java community. Speaking of community, at JavaOne 2008 there were five sessions surrounding VisualVM. If you had a chance to attend any of those sessions, the InfoQ community would enjoy your comments and feedback.
For additional information try some of the following links:
RESTful todo list sample tutorial with Groovy & Project Zero
Hacking 101 -The Top 10 Attacks in Web Applications
Scale your applications without punishing your database
Introducing Project Zero: Building RESTful services for your Web application
Thin client paradigm characterized by web applications is a kludge that needs to be repudiated. Old compromises are no longer needed and it's time to move the presentation tier to where it belongs.
In this presentation filmed during QCon 2007, Jeff Sutherland, the creator of Scrum, talks about his visit at Google to do an analysis of Google's first implementation of Scrum.
In this article, Bryon Jacob and Chris Berry introduce AtomServer, their implementation of a full-fledged Atom Store based on Apache Abdera, which is now available as open source.
It is easy to think that virtualization applies only to servers. In reality the recent resurgence of the concept is also being applied to networking, storage, and application infrastructure.
In this article, Stefan Tilkov explains some of the most common anti-patterns found in applications that claim to follow a "RESTful" design and suggests ways to avoid them.
In this article, Adrien Louis and Marc Dutoo discuss the differences and relative merits of using orchestration vs. routing in a typical ESB setup, and discuss various implementation options.
Wayne Lund discusses batch processing, Spring Batch objectives and features, scenarios for usage, Spring Batch architecture, scaling, example code, failures and retrying, and the future roadmap.
Developer Jay Fields draws on his experiences as a ThoughtWorks consultant to describe effective user story estimation techniques.
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