I know when Mysql uses count, if the data volume is slow.
What will happen if I use. length in mongodb?
In mongodb, query performance still depends on whether the entire document needs to be traversed and whether an index is established.
I know when Mysql uses count, if the data volume is slow.
What will happen if I use. length in mongodb?
In mongodb, query performance still depends on whether the entire document needs to be traversed and whether an index is established.