springboot-redis-tips

一. 背景

• springboot2.x 之后默认redis客户端不是jedis而是lettuce但是在集群环境中如果有一个节点挂了就会导致服务不可用

二. 解决

# Example 37. Enabling periodic cluster topology view updates
RedisClusterClient clusterClient = RedisClusterClient.create(RedisURI.create("localhost", 6379));


ClusterTopologyRefreshOptions topologyRefreshOptions = ClusterTopologyRefreshOptions.builder()
                                .enableAdaptiveRefreshTrigger(RefreshTrigger.MOVED_REDIRECT, RefreshTrigger.PERSISTENT_RECONNECTS)
                                .adaptiveRefreshTriggersTimeout(30, TimeUnit.SECONDS)
                                .build();

clusterClient.setOptions(ClusterClientOptions.builder()
                                .topologyRefreshOptions(topologyRefreshOptions)
                                .build());
...

clusterClient.shutdown();

三. 参考

• redis整合letture自动拓扑更新
• SpringBoot2.X与redis Lettuce集成踩坑
• redis 字符串和SDS