【解决】io.lettuce.core.RedisCommandTimeoutException: Command timed out

springboot（spring也一样的）整个redis 的时候报如下错误：

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

错误原因：连接超时时间设置的过于短暂（我这边设置成了0），修改为5000左右即可

# REDIS (RedisProperties)
# Redis数据库索引（默认为0）
spring.redis.database= 0
# Redis服务器地址
spring.redis.host= 192.168. 30.103
# Redis服务器连接端口
spring.redis.port= 6379
# Redis服务器连接密码（默认为空）
spring.redis.password=
# 连接池最大连接数（使用负值表示没有限制）
spring.redis.jedis.pool.max-active= 8
# 连接池最大阻塞等待时间（使用负值表示没有限制）
spring.redis.jedis.pool.max- wait=- 1
# 连接池中的最大空闲连接
spring.redis.jedis.pool.max-idle= 8
# 连接池中的最小空闲连接
spring.redis.jedis.pool.min-idle= 0
# 连接超时时间（毫秒）
spring.redis.timeout= 5000