How to implement many update or insert?

Question

JavaScript

there is a model with a unique field, so you need to insert a lot of records there so that new ones are inserted, and duplicates do not appear.
now, when inserting, if there is at least 1 duplicate, it simply cancels the entire request with an error
MongoError: E11000 duplicate key error collection

Answer 1

Check it out if you have any questions - write
https://docs.mongodb.com/v3.0/reference/method/db....
https://docs.mongodb.com/manual/reference/method/d...