In-Memory Data Store High-Availability: Redis Sentinel

Redis Sentinel is a system designed for managing Redis server instances. It provides several key features:

• Monitoring: Sentinel constantly checks your Redis servers to ensure they are functioning properly.
• Notifications: Sentinel can notify you about issues with your Redis servers.
• Automatic failover: If a master Redis server is not functioning, Sentinel can automatically promote a slave server to be the new master.
• Configuration provider: Sentinel can provide other Redis clients with the information about configuration and the current master–slave setup.

You would want to use Redis Sentinel for the following reasons:

• High availability: Sentinel helps to ensure that your system remains operational even in the case of a failure. It does this by automatically switching to a replica server if the main server fails.
• Disaster recovery: Sentinel can help to minimize downtime and data loss...