Index Creation Tutorials¶

Instructions for creating and configuring indexes in MongoDB and building indexes on replica sets and sharded clusters.

Create an Index: Build an index for any field on a collection.
Create a Compound Index: Build an index of multiple fields on a collection.
Create a Unique Index: Build an index that enforces unique values for the indexed field or fields.
Create a Partial Index: Build an index that only indexes documents that meet specified filter criteria. This can reduce index size and improve performance.
Create a Sparse Index: Build an index that omits references to documents that do not include the indexed field. This saves space when indexing fields that are present in only some documents.
Create a Hashed Index: Compute a hash of the value of a field in a collection and index the hashed value. These indexes permit equality queries and may be suitable shard keys for some collections.
Build Indexes on Replica Sets: To build indexes on a replica set, you build the indexes separately on the primary and the secondaries, as described here.
Build Indexes in the Background: Background index construction allows read and write operations to continue while building the index, but take longer to complete and result in a larger index.
Build Old Style Indexes: A {v : 0} index is necessary if you need to roll back from MongoDB version 2.0 (or later) to MongoDB version 1.8.

← Indexing Tutorials Create an Index →

Was this page helpful?

Yes No

Thank you for your feedback!

We're sorry! You can Report a Problem to help us improve this page.