Question

What are the components of a MongoDB sharded cluster?

Answer 1

A MongoDB sharded cluster having three components as bellow:-

• Shard: Shard contains a subset of the sharded data. Each shard can be deployed as a replica set.
• Mongos: Mongos provide an interface between the client applications and the mongo cluster. Mongos act as a query router to the sharded cluster.
• Config servers: Config servers store metadata and configuration settings for the MongoDB sharded cluster