Learn to understand something by following the previous steps:

1. What is it

2. What’s the use

3,…

So for Mongoose, do the same.

But a Google search will show you a bunch of code that tells you how to use it.

After many researches, we know that Mongoose is about:

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1. Mongoose is a Node.js library

2, the function is to make Node.js better and more convenient to operate mongoDB. Simply put, Mongoose is node.js using mongoDB ORM.

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MongoDB and Node.js support javascript and JSON, so they’re a natural fit.

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Note that Mongoose is not mongos. Mongos is an automatic sharding module for mongoDB to build a large, scalable database cluster that can be incorporated into dynamically growing machines.