Mongodb: when to call ensureIndex?

Question

When should I call ensureIndex? Before inserting a single record, after inserting a single record, or before calling find()?

Regards,

Johnny

Answer 1

It doesn't matter, but you only have to do this once. If you want to batch insert a large amount of data to an empty collection then it is best to create the index after the inserts but otherwise it doesn't really matter.