From Seo Wiki - Search Engine Optimization and Programming Languages
OSCache is "a Java framework" developed by OpenSymphony that makes it easy to cache content in Web applications.
According to OpenSymphony, OSCache
- is a caching solution that includes a JSP tag library and set of classes to perform fine grained dynamic caching of JSP content, servlet responses or arbitrary objects.
- provides both in memory and persistent on disk caches.
- can allow your site to have graceful error tolerance (eg if an error occurs like your db goes down, you can serve the cached content so people can still surf the site almost without knowing).
OSCache uses the OpenSymphony Software License which is a modified (and fully compatible with) Apache Software License.