OSCache is an open-source caching library that's available free of charge from theOpenSymphony organization. OSCache has a set of JSP tags that make it easy to implement page caching in your JSP application.

Following are some Cache techniques it fulfills:-

Cache entry An object that's stored into a page cache is known as a cache entry. In a JSP application,a cache entry is typically the output of a JSP page, a portion of a JSP page, or a servlet.

Cache key A page cache is like a hash table. When you save a cache entry in a page cache, you mustprovide a cache key to identify the cache data. You can use keys like URI, other parameterslike username, ipaddress to indentify cache data.

Cache duration This is the period of time that a cache entry will remain in a page cache before it expires.When a cache entry expires, it's removed from the cache and will be regenerated again.

Cache scope This defines at what scope the data is stored application or session scope.