Posted on 2009-11-16 17:12
Gavin.lee 阅读(661)
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MemCache
这段时间解决系统的瓶颈，首要是对memcache的优化，今天得空将目前在用的memcache整理了一下，贴个客户端实体类-----这里设置的参数都是通过配置文件的。道理很简单，以戒后用
（注：
http://code.google.com/p/memcache-client-forjava/downloads/list 本次使用的是来自这里的封装包，网上结论说alisoft memcache 性能不高，经高压下使用，个人感觉确实不妥。
可考虑使用
http://www.whalin.com/memcached/#download ）
package yixun.wap.cache;
/** *//**
* @deprecated mem-cache缓存类 备用类
* @author Administrator
* @date 2009-11-15 14:08:02 更新
*/
import java.util.Date;
import com.alisoft.xplatform.asf.cache.memcached.client.MemCachedClient;
import com.alisoft.xplatform.asf.cache.memcached.client.SockIOPool;
import yixun.wap.resourcesload.MemcacheConfig;
public class MemCache 
{
private static MemCachedClient mcc = null;
static {
mcc = new MemCachedClient();
Boolean nagle = false;
Boolean ce = true;
// 获取socke连接池的实例对象
SockIOPool pool = SockIOPool.getInstance();
// 设置服务器信息
pool.setServers(MemcacheConfig.getServers().split(";"));
String[] weights = MemcacheConfig.getWeights().split(";");
Integer[] wei = new Integer[weights.length];
for (int i = 0; i < weights.length; i++) {
wei[i] = Integer.parseInt(weights[i]);
}
pool.setWeights(wei);
// 设置初始连接数、最小和最大连接数以及最大处理时间
pool.setInitConn(Integer.parseInt(MemcacheConfig.getInitconn()));
pool.setMinConn(Integer.parseInt(MemcacheConfig.getMinconn()));
pool.setMaxConn(Integer.parseInt(MemcacheConfig.getMaxconn()));
pool.setMaxIdle(Long.parseLong(MemcacheConfig.getMaxidle()));
// 设置主线程的睡眠时间
pool.setMaintSleep(Long.parseLong(MemcacheConfig.getMaintsleep()));
if (!MemcacheConfig.getNagle().equals("false")) {
nagle = true;
}
// 设置TCP的参数，连接超时等
pool.setNagle(nagle);
pool.setSocketTO(Integer.parseInt(MemcacheConfig.getSocketTO()));
pool.setSocketConnectTO(Integer.parseInt(MemcacheConfig.getSocketConnectTO()));
// 初始化连接池
pool.initialize();
// 压缩设置，超过指定大小（单位为K）的数据都会被压缩
if (MemcacheConfig.getCompressEnable().equals("false")) {
ce = false;
}
mcc.setCompressEnable(ce);
mcc.setCompressThreshold(Long.parseLong(MemcacheConfig.getCompressThreshold()));
}
private MemCache(){
}
private static MemCache instance;
public synchronized static MemCache getInstance() {
if(instance == null) {
return new MemCache();
}
return instance;
}
// 在memcache中对数据进行存、取、删、更新
public boolean set(String key, Object value) {
return mcc.set(key, value);
}
public boolean set(String key, Object value, String time) {
return mcc.set(key, value, new Date(Long.parseLong(time)));
}
public Object get(String key) {
return mcc.get(key);
}
public boolean delete(String key) {
return mcc.delete(key);
}
public boolean update(String key, Object obj) {
return mcc.replace(key, obj);
}
public boolean update(String key, Object value, Date expiry) {
return mcc.replace(key, value, expiry);
}
public void flush_all() {
mcc.flushAll();
}
public MemCachedClient getMcc() {
return mcc;
}
public void setMcc(MemCachedClient mcc) {
this.mcc = mcc;
}
}