MongoDB Atlas

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Overview

MongoDB Atlas is aa Database As A Service (DAAS), it is a fully managed cloud hosted database by MongoDB.

Clusters

Atlas provides clusters, that are groups of servers that are used to store data. Clusters are typically configured in a replica set.

Replica Set

A replica set is number of connected MongoDB instances that store the same data. Having the data replicated across various instances, ensures that if something happens to one of the instances, the data will remain intact.

Instance

An instance is a single machine locally or in the cloud, running a MongoDB.