How can MongoDB wiredTiger internal cache be sized? Also, how does it

1.	How can MongoDB wiredTiger internal cache be sized? Also, how does it differ from the filesystem cache?
Answer» only those DOCUMENTS that CONTAIN the field SPECIFIED in the query. For the following documents in EMPLOYEE collection *{ _id: 1, name: "Jonas", linkedInProfile: null }, { _id: 2, name: “Williams” }* The query { linkedInProfile: { $exists: true } } will return only the employee “Jonas”

How can MongoDB wiredTiger internal cache be sized? Also, how does it differ from the filesystem cache?

Answer»

only those DOCUMENTS that CONTAIN the field SPECIFIED in the query.

For the following documents in EMPLOYEE collection

{ _id: 1, name: "Jonas", linkedInProfile: null }, { _id: 2, name: “Williams” }

The query { linkedInProfile: { $exists: true } } will return only the employee “Jonas”