io.lettuce.core.RedisCommandTimeoutException: Command timed out 解决办法

Jwbasta

5048人浏览 · 2022-08-27 18:50:13

Jwbasta · 2022-08-27 18:50:13 发布

Springboot 集成 redis 项目，

引入包：默认为 lettuce 客户端连接

 <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
            <!-- <version>2.5.4</version>  -->
        </dependency>

报错信息如下：


org.springframework.dao.QueryTimeoutException: Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out
	at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:70) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:257) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.data.redis.connection.lettuce.LettuceConnection.pSubscribe(LettuceConnection.java:747) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.data.redis.listener.RedisMessageListenerContainer$SubscriptionTask.eventuallyPerformSubscription(RedisMessageListenerContainer.java:783) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.data.redis.listener.RedisMessageListenerContainer$SubscriptionTask.run(RedisMessageListenerContainer.java:750) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at java.lang.Thread.run(Thread.java:748) [na:1.8.0_151]
 
Caused by: io.lettuce.core.RedisCommandTimeoutException: Command timed out
	at io.lettuce.core.LettuceFutures.awaitOrCancel(LettuceFutures.java:114) ~[lettuce-core-5.0.2.RELEASE.jar:na]
	at io.lettuce.core.FutureSyncInvocationHandler.handleInvocation(FutureSyncInvocationHandler.java:62) ~[lettuce-core-5.0.2.RELEASE.jar:na]
	at io.lettuce.core.internal.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:80) ~[lettuce-core-5.0.2.RELEASE.jar:na]
	at com.sun.proxy.$Proxy70.psubscribe(Unknown Source) ~[na:na]
	at org.springframework.data.redis.connection.lettuce.LettuceSubscription.doPsubscribe(LettuceSubscription.java:54) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.data.redis.connection.util.AbstractSubscription.pSubscribe(AbstractSubscription.java:130) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.data.redis.connection.lettuce.LettuceConnection.pSubscribe(LettuceConnection.java:745) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	... 3 common frames omitted

解决方法：

1. 修改redis超时时间，配置文件中修改配置

2. 添加redis连接池

整体配置如下：

spring:
redis:
# Redis服务器地址
host: 127.0.0.1
# Redis服务器连接端口
port: 6379
# Redis服务器连接密码
password:
# Redis数据库索引
database: 3
pool:
# 连接池最大连接数（使用负值表示没有限制）
max-active: 10
# 连接池最大阻塞等待时间（使用负值表示没有限制）
max-wait: 1
# 连接池中的最大空闲连接
max-idle: 10
# 连接池中的最小空闲连接
min-idle: 1
# 连接超时时间（毫秒）
timeout: 30000
lettuce:
pool:
max-active: 50
max-wait: -1
max-idle: 50
min-idle: 1
但是采用上面的配置添加了连接池，会发现项目启动失败，报错信息也没有。缺少了一个 commons-pool2 连接池的包，加上即可，整体包如下：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
    <!-- <version>2.5.4</version>  -->
</dependency>

<dependency>
      <groupId>org.apache.commons</groupId>
       <artifactId>commons-pool2</artifactId>
</dependency>