Win a copy of Re-engineering Legacy Software this week in the Refactoring forum
or Docker in Action in the Cloud/Virtualization forum!
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic

Is Velocity thread safe?

 
Jayesh A Lalwani
Rancher
Posts: 2756
32
Eclipse IDE Spring Tomcat Server
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
We have a Velocity Helper class that wraps Velocity engine for processing templates. The helper method is basically this



The thing is VelocityEngine is not really a lightweightt object, and I wanted to see if we can avoid creating an engine eveytime. In my thread dumps I see it loading and parsing some resources from classpath. This creates memory issues in JBoss 5.1 because VelocityEngine ends up calling CFS which has memory leaks. That is a whole another issue of course, but frequent creation of VelocityEngine instances excaberates the JBoss memory leaks. We are going to explode our war so we don;t use VFS.

So, I was wondering if I can just have one instance of VelocityEngine? Is it thread safe?
 
Consider Paul's rocket mass heater.
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic