【问题解决】org.springframework.dao.QueryTimeoutException: Redis command timed out； nested exception is io

1.出现问题异常

核心错误输出

org.springframework.dao.QueryTimeoutException: Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out after 1 minute(s)

异常详细

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enableRedisKeyspaceNotificationsInitializer' defined in class path resource [org/springframework/boot/autoconfigure/session/RedisSessionConfiguration$SpringBootRedisHttpSessionConfiguration.class]: Invocation of init method failed; nested exception is org.springframework.dao.QueryTimeoutException: Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out after 1 minute(s)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1799) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$202/1705969074.getObject(Unknown Source) ~[na:na]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879) ~[spring-context-5.2.15.RELEASE.jar:5.2.15.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) ~[spring-context-5.2.15.RELEASE.jar:5.2.15.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:755) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:402) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:312) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1247) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1236) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE]
	at com.gdones.wms.GDonesWMSApplication.main(GDonesWMSApplication.java:27) [classes/:na]
Caused by: org.springframework.dao.QueryTimeoutException: Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out after 1 minute(s)
	at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:70) ~[spring-data-redis-2.3.9.RELEASE.jar:2.3.9.RELEASE]
	at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41) ~[spring-data-redis-2.3.9.RELEASE.jar:2.3.9.RELEASE]
	at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44) ~[spring-data-redis-2.3.9.RELEASE.jar:2.3.9.RELEASE]
	at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42) ~[spring-data-redis-2.3.9.RELEASE.jar:2.3.9.RELEASE]
	at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:275) ~[spring-data-redis-2.3.9.RELEASE.jar:2.3.9.RELEASE]
	at org.springframework.data.redis.connection.lettuce.LettuceServerCommands.convertLettuceAccessException(LettuceServerCommands.java:571) ~[spring-data-redis-2.3.9.RELEASE.jar:2.3.9.RELEASE]
	at org.springframework.data.redis.connection.lettuce.LettuceServerCommands.getConfig(LettuceServerCommands.java:307) ~[spring-data-redis-2.3.9.RELEASE.jar:2.3.9.RELEASE]
	at org.springframework.data.redis.connection.DefaultedRedisConnection.getConfig(DefaultedRedisConnection.java:1381) ~[spring-data-redis-2.3.9.RELEASE.jar:2.3.9.RELEASE]
	at org.springframework.session.data.redis.config.ConfigureNotifyKeyspaceEventsAction.getNotifyOptions(ConfigureNotifyKeyspaceEventsAction.java:76) ~[spring-session-data-redis-2.3.3.RELEASE.jar:2.3.3.RELEASE]
	at org.springframework.session.data.redis.config.ConfigureNotifyKeyspaceEventsAction.configure(ConfigureNotifyKeyspaceEventsAction.java:57) ~[spring-session-data-redis-2.3.3.RELEASE.jar:2.3.3.RELEASE]
	at org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration$EnableRedisKeyspaceNotificationsInitializer.afterPropertiesSet(RedisHttpSessionConfiguration.java:333) ~[spring-session-data-redis-2.3.3.RELEASE.jar:2.3.3.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1858) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1795) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
	... 18 common frames omitted
Caused by: io.lettuce.core.RedisCommandTimeoutException: Command timed out after 1 minute(s)
	at io.lettuce.core.ExceptionFactory.createTimeoutException(ExceptionFactory.java:51) ~[lettuce-core-5.3.7.RELEASE.jar:5.3.7.RELEASE]
	at io.lettuce.core.LettuceFutures.awaitOrCancel(LettuceFutures.java:119) ~[lettuce-core-5.3.7.RELEASE.jar:5.3.7.RELEASE]
	at io.lettuce.core.FutureSyncInvocationHandler.handleInvocation(FutureSyncInvocationHandler.java:75) ~[lettuce-core-5.3.7.RELEASE.jar:5.3.7.RELEASE]
	at io.lettuce.core.internal.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:79) ~[lettuce-core-5.3.7.RELEASE.jar:5.3.7.RELEASE]
	at com.sun.proxy.$Proxy189.configGet(Unknown Source) ~[na:na]
	at org.springframework.data.redis.connection.lettuce.LettuceServerCommands.getConfig(LettuceServerCommands.java:305) ~[spring-data-redis-2.3.9.RELEASE.jar:2.3.9.RELEASE]
	... 24 common frames omitted
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2.问题原因

• 可能是Redis服务长时间处于高并发情况，或服务异常断链
• 它表示Redis命令超时了。嵌套异常io.lettuce.core.RedisCommandTimeoutException指出具体的Redis命令超时异常细节。根据异常信息，这个Redis命令在1分钟后超时了，可能是由于Redis服务器太忙或者网络延迟等原因导致的。为了解决这个问题，可以尝试增加Redis服务器的性能、优化Redis命令或者调整系统配置来提高网络稳定性，以减少超时的概率。

3.解决方法

1. 增加Redis服务器的性能：可以通过增加Redis服务器的内存、CPU和网络带宽等资源来提高其性能，从而减少Redis命令超时的概率。
2. 优化Redis命令：可以检查应用程序中使用的Redis命令是否存在性能瓶颈，并尝试进行优化。例如，可以减小Redis数据集的大小，或者使用更有效的Redis命令（例如使用SCAN命令代替KEYS命令）。
3. 调整系统配置以提高网络稳定性：如果超时是由于网络延迟或不稳定性导致的，则可以尝试调整系统配置来提高网络稳定性，例如增加网络带宽、减小TCP超时时间等。
4. 使用合适的Redis客户端库：可以考虑使用性能更好、更稳定的Redis客户端库，例如Jedis或Lettuce。这些客户端库通常具有更好的错误处理功能，并且能够更好地处理Redis命令超时等异常情况。