Keep Redis available even when a server fails by using replicas, failover, and redundant infrastructure.
A single Redis server becomes a point of failure if your application depends on it. Redis can use replicas to maintain additional copies of data and systems such as Sentinel to monitor instances and coordinate automatic failover.
High availability is about more than creating a replica. Applications also need to handle connection changes, failover events, stale replicas, and the possibility that a failed primary may temporarily affect writes.
What you'll walk away knowing