Spring Boot Redis Cluster 实战干货

来源：Java技术栈

添加配置信息

spring.redis: database: 0 # Redis数据库索引（默认为0） #host: 192.168.1.8 #port: 6379 password: 123456 timeout: 10000 # 连接超时时间（毫秒） pool: max-active: 8 # 连接池最大连接数（使用负值表示没有限制） max-idle: 8 # 连接池中的最大空闲连接 max-wait: -1 # 连接池最大阻塞等待时间（使用负值表示没有限制） min-idle: 0 # 连接池中的最小空闲连接 cluster: nodes: - 192.168.1.8:9001 - 192.168.1.8:9002 - 192.168.1.8:9003

只需要添加3个master节点，3个slave节点不需要添加。

你要做的也只有这些配置了，其他的spring boot都自动配置好了。

现在就可以像使用单机一样使用集群，redis会自动按key分片到不同的集群实例。

遇到的问题

Caused by: redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool at redis.clients.util.Pool.getResource(Pool.java:53) at redis.clients.jedis.JedisPool.getResource(JedisPool.java:226) at redis.clients.jedis.JedisSlotBasedConnectionHandler.getConnectionFromSlot(JedisSlotBasedConnectionHandler.java:66) at redis.clients.jedis.JedisClusterCommand.runWithRetries(JedisClusterCommand.java:116) at redis.clients.jedis.JedisClusterCommand.runWithRetries(JedisClusterCommand.java:141) at redis.clients.jedis.JedisClusterCommand.runWithRetries(JedisClusterCommand.java:141) at redis.clients.jedis.JedisClusterCommand.runWithRetries(JedisClusterCommand.java:141) at redis.clients.jedis.JedisClusterCommand.runWithRetries(JedisClusterCommand.java:141) at redis.clients.jedis.JedisClusterCommand.runBinary(JedisClusterCommand.java:60) at redis.clients.jedis.BinaryJedisCluster.set(BinaryJedisCluster.java:77) at org.springframework.data.redis.connection.jedis.JedisClusterConnection.set(JedisClusterConnection.java:618) ... 36 moreCaused by: redis.clients.jedis.exceptions.JedisConnectionException: java.net.ConnectException: Connection refused: connect at redis.clients.jedis.Connection.connect(Connection.java:207) at redis.clients.jedis.BinaryClient.connect(BinaryClient.java:93) at redis.clients.jedis.BinaryJedis.connect(BinaryJedis.java:1767) at redis.clients.jedis.JedisFactory.makeObject(JedisFactory.java:106) at org.apache.commons.pool2.impl.GenericObjectPool.create(GenericObjectPool.java:868) at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:435) at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:363) at redis.clients.util.Pool.getResource(Pool.java:49) ... 46 moreCaused by: java.net.ConnectException: Connection refused: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at redis.clients.jedis.Connection.connect(Connection.java:184) ... 53 more

尝试往redis写数据的时候，报不能获取连接异常，跟踪了半天代码，发现连接的是127.0.0.1，而不是配置的192.168.1.8，这就奇怪了，继续跟踪代码发现是往redis服务器获取的返回的集群实例列表，真是坑！