[WishList] [Deployment] [EJB]

[Sergei Batiuk]

I would like to discuss this before posting to the Geronimo WishList.   === Stubless and stubs-enabled deployment ===   One of the greatest problems in the EJB development, is that EJB deployment usually takes a lot of time (in servers like Weblogic, or SunONE appserver), because a container needs to generate and compile stub classes for EJBs. JBoss and JRun provide fast deployment because they use reflection instead of code generation and compilation. However, the EJB invocation based on reflection is known for being slower than the one based on stubs.   Therefore, two types of EJB deployment required:   1. For development, it's best to use stubless deployment, based on reflection (like in JBoss and JRun). This will enable fast deployment cycles. Performance impact on remote method invocation is not critical during application development; but the speed of deployment is. 2. For production, it's best to use deployment based on stubs to provide better performance (like in Weblogic and SunONE). After you make sure your EJBs work well, you won't need to deploy them often. In production remote method inocation performance matters, and the speed of deployment is not that important.   Sincerely, Sergei Batiuk.