Configuring Redis Sentinel
Datastores provide capability in handling faulty scenarios. These capabilities are in-built and do not expose themselves in the manner in which they handle fault tolerance. Redis, which started with simple key value datastore, has evolved into a system which provides an independent node to take care of the fault management. This system is called Sentinel.
The idea behind Sentinel is that it's an independent node which keeps a track on the master node and the other slave nodes. When a master node goes down, it promotes the slave node to become the master. As discussed, in a master-slave scenario, master is meant to write and slaves are meant to read, so when a slave is promoted to master, it has the capability to read ...
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