redis cluster VS tw

Posted 2020-11-18 旋转乾坤

搭建集群脚本

#/bin/bash

/usr/local/bin/redis-server /usr/local/redis-cluster/30001/redis.conf

/usr/local/bin/redis-server /usr/local/redis-cluster/30002/redis.conf

/usr/local/bin/redis-server /usr/local/redis-cluster/30003/redis.conf

/usr/local/bin/redis-server /usr/local/redis-cluster/30004/redis.conf

/usr/local/bin/redis-server /usr/local/redis-cluster/30005/redis.conf

/usr/local/bin/redis-server /usr/local/redis-cluster/30006/redis.conf

/usr/local/redis-4.0.2/src/redis-trib.rb create --replicas 1 127.0.0.1:30001 127.0.0.1:30002 127.0.0.1:30003 127.0.0.1:30004 127.0.0.1:30005 127.0.0.1:30006

新增节点

/usr/local/redis-4.0.2/src/redis-trib.rb add-node 127.0.0.1:30007 127.0.0.1:30001

但还不能使用，要激活

/usr/local/redis-4.0.2/src/redis-trib.rb reshard 127.0.0.1:30001

1、tw是一层代理，对外提供一个VIP；cluster是与后端节点直连

2、tw不可平滑扩容（期间会丢部分key），cluster可以（期间会移动slot，客户端透明无感知）；