Memcached ++++ exception thrown while trying to get object from cache for key

短命女 2022-06-10 08:46 130阅读 0赞

### Memcached ++++ exception thrown while trying to get object from cache for key   ###

2016-10-20 14:57:13|  分类： [ 默认分类][Link 1] |  标签：[memcached][]  [xmemcached][]  [memcached客户端][memcached 1]  |举报 |字号大中小 订阅

\++++ exception thrown while writing bytes to server on set

您的主机中的软件中止了一个已建立的连接

java.io.IOException: 您的主机中的软件中止了一个已建立的连接。  
at sun.nio.ch.SocketDispatcher.read0(Native Method)  
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:25)  
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:233)  
at sun.nio.ch.IOUtil.read(IOUtil.java:206)  
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:236)  
at sun.nio.ch.SocketAdaptor$SocketInputStream.read(SocketAdaptor.java:184)  
at sun.nio.ch.ChannelInputStream.read(ChannelInputStream.java:86)

隔一段时间不访问，一开始访问就报错。

使用的客户端是com.danga.memcached

怀疑是客户端问题

最后换成客户端：

com.whalin.Memcached-Java-Client

问题解决，会不会再出现，等后面再观察。

进过观察，换了memcached服务器版本，客户端版本，已经尝试的客户端的各个参数，参数设置会延迟刷新的时候，但是久了后还是会出现断掉的情况，猜想原因：客户端在维护socket池的时候出现了bug，在检查的时候，没把有问题的连接给关掉。导致第一次访问那个缓存还是之前的问题连接，然后就报错。

解决办法：换成xmemcached 客户端，xmemcached 是采用nio的方式，理论上是可以不用维持数据池的，尝试效果，目前没出现这种情况。一下是跟spring整合的配置。

pom

<groupId>com.googlecode.xmemcached</groupId>

<artifactId>xmemcached</artifactId>

</dependency>

properties

memcache.server=xx

memcache.port=xx

memcache.connectionPoolSize=10

spring

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"

xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"

xsi:schemaLocation="http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

http://www.springframework.org/schema/context

http://www.springframework.org/schema/context/spring-context-3.0.xsd

http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

<constructor-arg>

<list>

<constructor-arg value="$\{memcache.server\}" />

<constructor-arg value="$\{memcache.port\}" />

</bean>

</list>

</constructor-arg>

</property>

</property>

</bean>

<bean id="xmemcachedClient" factory-bean="memcachedClientBuilder"

factory-method="build" destroy-method="shutdown" />

</beans>

使用：

@Resource

MemcachedClient xmemcachedClient;

@Override

public List<Configuration> getList() \{

List<Configuration> result = null;

try \{

result = (List<Configuration>) xmemcachedClient.get("configurationgetList");

if (result == null) \{

result = session.select(0, 0);

xmemcachedClient.set("configurationgetList", DateUtil.oneDayCache, result);

\} catch (TimeoutException e1) \{

e1.printStackTrace();

\} catch (InterruptedException e1) \{

e1.printStackTrace();

\} catch (MemcachedException e1) \{

e1.printStackTrace();

return result;

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[Link 1]: http://loveskywps.blog.163.com/blog/#m=0&t=1&c=fks_084068080084086065084082083095086084088065087085086064086
[memcached]: http://loveskywps.blog.163.com/blog/#m=0&t=3&c=memcached
[xmemcached]: http://loveskywps.blog.163.com/blog/#m=0&t=3&c=xmemcached
[memcached 1]: http://loveskywps.blog.163.com/blog/#m=0&t=3&c=memcached客户端