posted 16 years ago
WebSphere actually shouldn't be hosting those static files. Static files like images and css files should be on the file server, such as apache. That's what apache is optimized to do. That's probably your first step towards improving content delivery performance.
For actual caching of content, I don't think Apache or WebSphere does that, or at a very advanced level. With WebSphere, we always recommend using the WebSphere Edge Components for caching files. It's very optimized and very efficient.
There may be some open source alternatives.
-Cameron McKenzie