问题描述

hibernate使用memcached作为二级缓存，怎么构建memcached集群

我使用memcached作为hibernate的二级缓存实现，在memcached单节点的情况下，程序运行没问题。
后来想做一个memcached的集群，就使用了magent来做。但是使用magent之后，hibernate的二级缓存就报超时异常：
16:29:13832 DEBUG ReadWriteCache:160 - Cached: com.ct.po.TCtBizstatusType#1001
16:29:13832 DEBUG ReadWriteCache:148 - Caching: com.ct.po.TCtBizstatusType#990
16:29:14834 WARN LoggingMemcacheExceptionHandler:14 - Cache 'get' failed for key [quality.cache.ehcache.com.ct.po.TCtBizstatusType:0:990]
net.spy.memcached.OperationTimeoutException: Timeout waiting for value
at net.spy.memcached.MemcachedClient.get(MemcachedClient.java:771)
at net.spy.memcached.MemcachedClient.get(MemcachedClient.java:784)
at com.googlecode.hibernate.memcached.spymemcached.SpyMemcache.get(SpyMemcache.java:32)
at com.googlecode.hibernate.memcached.MemcachedCache.memcacheGet(MemcachedCache.java:116)
at com.googlecode.hibernate.memcached.MemcachedCache.get(MemcachedCache.java:164)
at org.hibernate.cache.ReadWriteCache.put(ReadWriteCache.java:153)
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:156)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:842)
at org.hibernate.loader.Loader.doQuery(Loader.java:717)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.doList(Loader.java:2144)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2028)
at org.hibernate.loader.Loader.list(Loader.java:2023)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:393)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at com.ctower.dao.impl.BaseDaoImpl.searchPaginated(BaseDaoImpl.java:65)
at com.ctower.dao.impl.BizstatusTypeDaoImpl.queryBizstatusTypeInfo(BizstatusTypeDaoImpl.java:40)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:203)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:162)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:209)
at $Proxy10.queryBizstatusTypeInfo(Unknown Source)
at com.ctower.web.action.BizstatusTypeAction.queryBizstatusType(BizstatusTypeAction.java:65)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:270)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)
at org.springframework.web.struts.DelegatingActionProxy.execute(DelegatingActionProxy.java:106)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at com.ctower.filter.LoggerFilter.doFilter(LoggerFilter.java:103)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at com.ctower.filter.SessionFilter.doFilterInternal(SessionFilter.java:18)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:78)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:879)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.util.concurrent.TimeoutException: Timed out waiting for operation
at net.spy.memcached.MemcachedClient$OperationFuture.get(MemcachedClient.java:1437)
at net.spy.memcached.MemcachedClient.get(MemcachedClient.java:764)
... 73 more

然后我自己又做一个手动连接magent的代码，发现只能往里面放简单类型，放自定义的对象的时候，程序就运行不下去，一直卡住了，在magent的服务器上 telnet 地址 magent的接口，还可以连接上，但是stats的时候也卡住了。
但如果是访问memcached单节点，就可以存取对象。

我想请问：
1：在hibernate使用memcached做二级缓存的时候，是否可以使用magent
2：在hibernate使用memcached做二级缓存的时候，怎么能实现memcached的集群
3：在java代码中是否有对应magent的API（以上情况中，java所使用的API都是memcached的）

请各路大神指教！