Spring Boot Redis Cluster 實戰乾貨

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添加配置資訊

spring.redis:  database: 0 # Redis資料庫索引（預設為0）  #host: 192.168.1.8  #port: 6379  password: 123456  timeout: 10000 # 連線逾時時間（毫秒）    pool:     max-active: 8 # 串連池最大串連數（使用負值表示沒有限制）    max-idle: 8 # 串連池中的最大空閑串連    max-wait: -1 # 串連池最大阻塞等待時間（使用負值表示沒有限制）    min-idle: 0 # 串連池中的最小空閑串連  cluster:    nodes:      - 192.168.1.8:9001      - 192.168.1.8:9002      - 192.168.1.8:9003

只需要添加3個master節點，3個slave節點不需要添加。

你要做的也只有這些配置了，其他的spring boot都自動設定好了。

現在就可以像使用單機一樣使用叢集，redis會自動按key分區到不同的叢集執行個體。

遇到的問題

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

嘗試往redis寫資料的時候，報不能擷取串連異常，跟蹤了半天代碼，發現串連的是127.0.0.1，而不是配置的192.168.1.8，這就奇怪了，繼續跟蹤代碼發現是往redis伺服器擷取的返回的叢集執行個體列表，真是坑！

源碼：

redis.clients.jedis.Jedis#clusterSlots

@Overridepublic List<Object> clusterSlots() {    checkIsInMultiOrPipeline();    client.clusterSlots();    return client.getObjectMultiBulkReply();}

就是這裡擷取返回的叢集列表，返回的就是127.0.0.1，而不是配置的192.168.1.8。

最後修改各個叢集節點的設定檔redis.conf，添加：

bind 192.168.1.8

重啟叢集節點之後，讀寫正常。

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Spring Boot Redis Cluster 實戰乾貨