Popular posts

Typically the default value ObjectId is more ideal for the MongoDB _id

ObjectId is a 12-byte BSON type, constructed using:

1. A 4-byte value representing the seconds since the Unix epoch,
2. A 3-byte machine identifier,
3. A 2-byte process id, and
4. A 3-byte counter, starting with a random value.

The problem with creating an auto-incrementing _id is that it will be difficult to scale such a system , also it creates bottlenecks in parallel or distributed systems .

Reference :docs.mongodb.org/manual/tutorial/create-an-auto-i…