best way to share a singleton across webapps in one ear?

[Andre Tow]

Hey all, I'm working on a project that has multiple webapps and I'd like to share a singleton across classloaders to all wars in the ear. What is the best way to go about doing this in websphere or in general?
Thanks

[Kyle Brown]

Read this month's JavaRanch Journal article on the "Distributed Cache Pattern".
Kyle

[Andre Tow]

Thanks, good stuff if your clustered, but isnt JMS overkill in a single server app? Any suggestions for a lighter weight alternative?
Thanks,

[Kyle Brown]

Ah -- Sorry, I never think about non-clustered applications because nearly every application ends up being clustered at some point.
The easiest thing might be to use the ServletContext of one of the web apps. I seem to remember from the API that if you get your ServletContext within any Servlet, and then use "getServletContext(String uri)" with the URI root of another Web App that you can retrieve that Web App's servlet context.
Kyle