mongodb locks?

Question

MongoDB

I'm using mongodb 3.2.
I couldn't find a proper tutorial on how to make locks at the document level (now apparently out of the box at the collection level). Can you provide links

Answer 1

If you use the storage engine WiredTiger (enabled by default in 3.2, but MMAPv1 may remain when upgrading from previous versions), then document-level locks. If this is not the case, I think it's worth collecting statistics (at least at the level of load description, expected and actual performance levels) and write to https://jira.mongodb.org/.