Add cache functions in the application, especially server-side, this article briefly introduces OSCache's application, download Osache's full package, you can see there is a src / webapp directory, some directories apply OSACHE to web applications Example, you can open web.xml to view the web configuration, and a profile is OSCache.properties, you should be placed under the classpath, the servlet example can view the com.Opensymphony.oscache.web.oscachaservlet class (in the webapp directory), details See the Osache documentation.