java - Redis中的notify-keyspace-events是什么

Question

我按照这个 spring-boot article 开始设置 spring 项目.但是突然应用程序无法成功启动，而是我得到以下堆栈跟踪:

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enableRedisKeyspaceNotificationsInitializer' defined in class org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration: Invocation of init method failed; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: ERR Unsupported CONFIG parameter: notify-keyspace-events; nested exception is redis.clients.jedis.exceptions.JedisDataException: ERR Unsupported CONFIG parameter: notify-keyspace-events
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1566)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
    at demo.UiApplication.main(UiApplication.java:29)
Caused by: org.springframework.dao.InvalidDataAccessApiUsageException: ERR Unsupported CONFIG parameter: notify-keyspace-events; nested exception is redis.clients.jedis.exceptions.JedisDataException: ERR Unsupported CONFIG parameter: notify-keyspace-events
    at org.springframework.data.redis.connection.jedis.JedisExceptionConverter.convert(JedisExceptionConverter.java:44)
    at org.springframework.data.redis.connection.jedis.JedisExceptionConverter.convert(JedisExceptionConverter.java:36)
    at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:37)
    at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:37)
    at org.springframework.data.redis.connection.jedis.JedisConnection.convertJedisAccessException(JedisConnection.java:195)
    at org.springframework.data.redis.connection.jedis.JedisConnection.setConfig(JedisConnection.java:618)
    at org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration$EnableRedisKeyspaceNotificationsInitializer.afterPropertiesSet(RedisHttpSessionConfiguration.java:170)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1625)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1562)
    ... 15 more
Caused by: redis.clients.jedis.exceptions.JedisDataException: ERR Unsupported CONFIG parameter: notify-keyspace-events
    at redis.clients.jedis.Protocol.processError(Protocol.java:113)
    at redis.clients.jedis.Protocol.process(Protocol.java:131)
    at redis.clients.jedis.Protocol.read(Protocol.java:200)
    at redis.clients.jedis.Connection.readProtocolWithCheckingBroken(Connection.java:285)
    at redis.clients.jedis.Connection.getStatusCodeReply(Connection.java:184)
    at redis.clients.jedis.Jedis.configSet(Jedis.java:2797)
    at org.springframework.data.redis.connection.jedis.JedisConnection.setConfig(JedisConnection.java:616)
    ... 18 more

主要消息是:ERR 不支持的 CONFIG 参数:notify-keyspace-events。

这是什么意思，如何解决？

Answer 1

您可以在以下位置阅读有关 Redis 键空间通知的信息:http://redis.io/topics/notifications

无论它们实际上是什么，您的 Redis 服务器似乎都不支持它们(例如 < v2.8)。