To join the cluster ( One of the nodes can execute )
–cluster Build all node information of the cluster
–cluster-replicas 1 The proportion of master and slave nodes ,1 Express 1 Lord 1 From the way
High availability shelf
A master-slave mode ： Read / write separation , Backup , One Master There can be multiple Slaves
sentry sentinel： monitor , Automatic transfer , When the sentinel found out that the main server was hung up , It will start from slave Re - election of a primary server
colony ： In order to solve single machine Redis The problem of limited capacity , Allocate data to multiple machines according to certain rules , Memory /QPS Not limited to a single machine , Increase concurrency .
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