Cloud options for a replica set

We can set up and operate a replica set from our own servers, but we can reduce our operational overhead by using a Database as a Service (DBaaS) provider to do so. The two most widely used MongoDB cloud providers are mLab (formerly MongoLab) and MongoDB Atlas, the native offering from MongoDB, Inc.

In this section, we will go over these options and how they fare in comparison to using our own hardware and data centers.

mLab

mLab is one of the most popular cloud DBaaS providers for MongoDB. It has been offered since 2011 and it is considered a stable and mature provider.

After signing up, we can easily deploy a replica set cluster in a set of cloud servers without any operational overhead....