Redis问题集

一、业务方向

　　问题1. Redis存储的值数据多了个双引号("")

　　　　现象：Redis的数据string和hash类型值多了个双引号("")；

　　　　原因：自定义配置类RedisTemplate<String, String>时，配置值的序列器又是支持Object，但值泛型是string，不是object，导致被当做对象序列化，从而存储有双引号；

　　　　解决办法：自定义配置类RedisTemplate<String, Object>即可。

二、部署方向

　　问题1：Redis每隔一段时间就报Connection reset by peer，尤其是每天早上报得最频繁

　　　　现象：Redis每隔一段时间就报Connection reset by peer，尤其是每天早上报得最频繁

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

org.springframework.data.redis.RedisSystemException: Redis exception; nested exception is io.lettuce.core.RedisException: java.io.IOException: Connection reset by peer
 
    at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:74)
 
    at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41)
 
    at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44)
 
    at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42)
 
    at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:272)
 
    at org.springframework.data.redis.connection.lettuce.LettuceStringCommands.convertLettuceAccessException(LettuceStringCommands.java:800)
 
    at org.springframework.data.redis.connection.lettuce.LettuceStringCommands.get(LettuceStringCommands.java:70)
 
    at org.springframework.data.redis.connection.DefaultedRedisConnection.get(DefaultedRedisConnection.java:267)
 
    at org.springframework.data.redis.connection.DefaultStringRedisConnection.get(DefaultStringRedisConnection.java:406)
 
    at org.springframework.data.redis.core.DefaultValueOperations$1.inRedis(DefaultValueOperations.java:57)
 
    at org.springframework.data.redis.core.AbstractOperations$ValueDeserializingRedisCallback.doInRedis(AbstractOperations.java:60)
 
    at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:222)
 
    at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:189)
 
    at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:96)
 
    at org.springframework.data.redis.core.DefaultValueOperations.get(DefaultValueOperations.java:53)
Caused by: io.lettuce.core.RedisException: java.io.IOException: Connection reset by peer
 
    at io.lettuce.core.internal.Exceptions.bubble(Exceptions.java:83)
 
    at io.lettuce.core.internal.Futures.awaitOrCancel(Futures.java:250)
 
    at io.lettuce.core.FutureSyncInvocationHandler.handleInvocation(FutureSyncInvocationHandler.java:75)
 
    at io.lettuce.core.internal.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:80)
 
    at com.sun.proxy.$Proxy260.get(Unknown Source)
 
    at org.springframework.data.redis.connection.lettuce.LettuceStringCommands.get(LettuceStringCommands.java:68)
 
    ... 85 common frames omitted
 
Caused by: java.io.IOException: Connection reset by peer
 
    at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
 
    at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
 
    at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
 
    at sun.nio.ch.IOUtil.read(IOUtil.java:192)
 
    at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380)
 
    at io.netty.buffer.PooledByteBuf.setBytes(PooledByteBuf.java:253)
 
    at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1134)
 
    at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:350)
 
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:151)
 
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719)
 
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)
 
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)
 
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
 
    at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
 
    at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
 
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
 
    ... 1 common frames omitted