memcached，运行一段时间后出现no socket to server available
问题描述：
目前memcached单独部署在一台服务器上，服务器内存为16G，memcached配置的内存为4G，多个应用连接该memcached。
memcached主要用来缓存页面及部分网站求数据。目前网站使用jetty部署，网站运行一段时间后网站无法访问，控制台出现如下错误：
2021-04-29 04:24:54:ERROR qtp570572747-24 com.alisoft.xplatform.asf.cache.memcached.client.SockIOPool.getSock(SockIOPool.java:726) - attempting to get SockIO from uninitialized pool!
2021-04-29 04:24:54:ERROR qtp570572747-44 com.alisoft.xplatform.asf.cache.memcached.client.MemCachedClient.set(MemCachedClient.java:690) - trying to store a null value to cache
2021-04-29 04:24:54:ERROR qtp570572747-24 com.alisoft.xplatform.asf.cache.memcached.MemcachedErrorHandler.handleErrorOnGet(MemcachedErrorHandler.java:36) - ErrorOnGet, cacheKey: RANGE_d67cb12403ff4e808185d60a2f386d85%2C100
java.io.IOException: no socket to server available
at com.alisoft.xplatform.asf.cache.memcached.client.MemCachedClient.get(MemCachedClient.java:1356)
at com.alisoft.xplatform.asf.cache.memcached.client.MemCachedClient.get(MemCachedClient.java:1296)
at com.alisoft.xplatform.asf.cache.memcached.MemcachedCache.get(MemcachedCache.java:272)
at com.alisoft.xplatform.asf.cache.memcached.MemcachedCache.get(MemcachedCache.java:23)
at com.********.cached.MemCached.get(MemCached.java:60)
at com.********.********Controller.login(*******Controller.java:404)
at sun.reflect.GeneratedMethodAccessor61.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.web.servlet.mvc.multiaction.MultiActionController.invokeNamedMethod(MultiActionController.java:471)
at org.springframework.web.servlet.mvc.multiaction.MultiActionController.handleRequestInternal(MultiActionController.java:408)
at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:838)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:800)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
at com.********.context.SecurityFilter.doFilter(SecurityFilter.java:30)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1125)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1059)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:497)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:313)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:248)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:626)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:546)
at java.lang.Thread.run(Thread.java:745)
2021-04-29 04:24:54:ERROR qtp570572747-24 com.alisoft.xplatform.asf.cache.memcached.MemcachedCache.get(MemcachedCache.java:276) - mclient0 cluster get error
com.alisoft.xplatform.asf.cache.memcached.MemcachedException: sock is null
at com.alisoft.xplatform.asf.cache.memcached.client.MemCachedClient.get(MemCachedClient.java:1357)
at com.alisoft.xplatform.asf.cache.memcached.client.MemCachedClient.get(MemCachedClient.java:1296)
at com.alisoft.xplatform.asf.cache.memcached.MemcachedCache.get(MemcachedCache.java:272)
at com.alisoft.xplatform.asf.cache.memcached.MemcachedCache.get(MemcachedCache.java:23)
at com.********.cached.MemCached.get(MemCached.java:60)
at com.********.******Controller.login(*******Controller.java:404)
at sun.reflect.GeneratedMethodAccessor61.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.web.servlet.mvc.multiaction.MultiActionController.invokeNamedMethod(MultiActionController.java:471)
at org.springframework.web.servlet.mvc.multiaction.MultiActionController.handleRequestInternal(MultiActionController.java:408)
at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:838)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:800)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
at com.********.context.SecurityFilter.doFilter(SecurityFilter.java:30)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1125)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1059)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:497)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:313)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:248)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:626)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:546)
at java.lang.Thread.run(Thread.java:745)
memcached配置文件内容如下：
<?xml version="1.0" encoding="UTF-8"?>
<memcached>
<client name="mclient0" compressEnable="true" defaultEncoding="UTF-8" socketpool="pool0">
<errorHandler>com.alisoft.xplatform.asf.cache.memcached.MemcachedErrorHandler</errorHandler>
</client>
<socketpool name="pool0" failover="true" initConn="5" minConn="5" maxConn="250" maintSleep="0"
nagle="false" socketTO="3000" aliveCheck="true">
<servers>127.0.0.1:11211</servers>
</socketpool>
</memcached>
求各位大神指点
答
是否可以换为redis缓存数据库呢？redis应该比较稳定的。
答
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