A Cluster in MongoDB is a term that is used to describe sharded clusters or fragmented clusters. The purpose of creating a cluster is basically to scale up the reads and writes in several nodes. And since its fragmented, a single node does not have to handle all the data and thus, you could separate the data along with numerous nodes of the shard, for better faster, and efficient processing.
If you are interested in learning more about MongoDB, check out the MongoDB tutorial, and if you wish to get certified, then check out the MongoDB certification course from Intellipaat. Watch the latest video on MongoDB Architecture to help you get started in this NoSQL database.
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