Using Oscache to Improve program performance

I. INTRODUCTION

Oscache is a broad-based, high-performance Java EE caching framework that can be applied to a common caching solution for any application in the JavaScript.

Two. Features

1. You can cache any object, you can cache portions of JSP pages or HTTP requests without restriction, and any Java object can be cached

2. Can be permanently cached, because the cache can be arbitrarily written to the hard disk

3. Support Cluster

4. You can control the expiration of cached objects

Three. Use

1. Caching of local pages

<%@ page language= "java" import= "java.util.*" pageencoding= "UTF-8"%><%@ taglib uri= "/http Www.opensymphony.com/oscache "prefix=" Cache "%><! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" >
2. Caching the entire page
<%@ page language= "java" import= "java.util.*" pageencoding= "UTF-8"%><%@ taglib uri= "/http Www.opensymphony.com/oscache "prefix=" Cache "%><! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" >
3. Cache Objects
public class Cacheservlet extends HttpServlet {private static final long serialversionuid = 1l;protected void Doget (httpse Rvletrequest request, HttpServletResponse response) {int refreshperiod = ten;//cache in 6 Secondsgeneralcacheadministrato R cache = new Generalcacheadministrator (); try {//Get data from cachedate mydate = (Date) cache.getfromcache ("MyDate", ref Reshperiod); System.out.println ("Current date is:" + mydate);}  catch (Needsrefreshexception e) {try {date mydate = new Date ();//Put data into Cachecache.putincache ("MyDate", mydate);} catch (Exception ex) {cache.cancelupdate ("mydate");}}}
oscache.properties
Web. XML
<?xml version= "1.0" encoding= "UTF-8"? ><web-app xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance" xmlns= "Http://java.sun.com/xml/ns/javaee" xmlns:web= "http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi: schemalocation= "Http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id= "Webapp_ ID "version=" 2.5 "><filter><filter-name>CacheFilter</filter-name><!-- Cachefilter only captures page requests with HTTP headers of 200, which are only cached for error-free requests--><filter-class> com.opensymphony.oscache.web.filter.cachefilter</filter-class><init-param><!--the time period in which the content is cached, in seconds, The default is 3,600 seconds--><param-name>time</param-name><param-value>10</param-value></ init-param><init-param><param-name>scope</param-name><param-value>application</ param-value></init-param></filter><!--Cache All the cache.jsp file--><filter-mapping> <filter-name>cachefilter</filter-name><url-pattern>/cache2.jsp</url-pattern></filter-mapping><servlet><servlet-name>cacheservlet</servlet-name ><servlet-class>com.zdp.cache.cacheservlet</servlet-class></servlet><servlet-mapping ><servlet-name>cacheServlet</servlet-name><url-pattern>/cacheServlet</url-pattern> </servlet-mapping><welcome-file-list><welcome-file>cache1.jsp</welcome-file></ Welcome-file-list></web-app>
four. Core Api-generalcacheadministrator:
1.void Putincache (String key,object content);//put on Object in a cache
2.Object Getfromcache (String key);//Get on Object from the Cache
3.void removeentry (String key);//Remove an Object in a cache
4.void flushentry (String key);//Flushes a single cache entry
5.void Flushall ();//flush the entire cache immediately
6.void CancelUpdate (String key);//Cacels a pending cache update
Participant Information: http://www.cnblogs.com/huzi007/p/3873396.html
Using Oscache to Improve program performance