【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：

1. org.springframework.dao.QueryTimeoutException: Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out
2. at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:70) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
3. at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
4. at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
5. at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
6. at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:257) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
7. at org.springframework.data.redis.connection.lettuce.LettuceConnection.pSubscribe(LettuceConnection.java:747) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
8. at org.springframework.data.redis.listener.RedisMessageListenerContainer$SubscriptionTask.eventuallyPerformSubscription(RedisMessageListenerContainer.java:783) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
9. at org.springframework.data.redis.listener.RedisMessageListenerContainer$SubscriptionTask.run(RedisMessageListenerContainer.java:750) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
10. at java.lang.Thread.run(Thread.java:748) [na:1.8.0_151]
12. Caused by: io.lettuce.core.RedisCommandTimeoutException: Command timed out
13. at io.lettuce.core.LettuceFutures.awaitOrCancel(LettuceFutures.java:114) ~[lettuce-core-5.0.2.RELEASE.jar:na]
14. at io.lettuce.core.FutureSyncInvocationHandler.handleInvocation(FutureSyncInvocationHandler.java:62) ~[lettuce-core-5.0.2.RELEASE.jar:na]
15. at io.lettuce.core.internal.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:80) ~[lettuce-core-5.0.2.RELEASE.jar:na]
16. at com.sun.proxy.$Proxy70.psubscribe(Unknown Source) ~[na:na]
17. at org.springframework.data.redis.connection.lettuce.LettuceSubscription.doPsubscribe(LettuceSubscription.java:54) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
18. at org.springframework.data.redis.connection.util.AbstractSubscription.pSubscribe(AbstractSubscription.java:130) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
19. at org.springframework.data.redis.connection.lettuce.LettuceConnection.pSubscribe(LettuceConnection.java:745) ~[spring-data-redis-2.0.5.RELEASE.jar:2.0.5.RELEASE]
20. ... 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

1. # REDIS (RedisProperties)
2. # Redis数据库索引（默认为0）
3. spring.redis.database=0
4. # Redis服务器地址
5. spring.redis.host=192.168.30.103
6. # Redis服务器连接端口
7. spring.redis.port=6379
8. # Redis服务器连接密码（默认为空）
9. spring.redis.password=
10. # 连接池最大连接数（使用负值表示没有限制）
11. spring.redis.jedis.pool.max-active=8
12. # 连接池最大阻塞等待时间（使用负值表示没有限制）
13. spring.redis.jedis.pool.max-wait=-1
14. # 连接池中的最大空闲连接
15. spring.redis.jedis.pool.max-idle=8
16. # 连接池中的最小空闲连接
17. spring.redis.jedis.pool.min-idle=0
18. # 连接超时时间（毫秒）
19. spring.redis.timeout=5000