Which type of indexes does MongoDB support?

Geospatial Index. To query geospatial data, MongoDB supports two types of indexes – 2d indexes and 2d sphere indexes.

How many indexes is too many MongoDB?

For example, instead of having one index on “Last name” and another on “First name”, it is typically most efficient to create an index that includes both “Last name” and “First name” if you query against both of the names. Our compound index can still be used to filter queries that specify the last name only.

How do I query large data in MongoDB?

1. Create Right indices and carefully use compound index. ( You can have max. 64 indices per collection and 31 fields in compound index)
2. Use mongo side pagination.
3. Compound index strictly follow sequence so read documentation and do trials.
4. Also try covered query for ‘summary’ like queries.

How is indexing done in MongoDB?

MongoDB uses multikey indexes to index the content stored in arrays. If you index a field that holds an array value, MongoDB creates separate index entries for every element of the array. These multikey indexes allow queries to select documents that contain arrays by matching on element or elements of the arrays.

How many types of indexes are there in MongoDB?

MongoDB provides two geospatial indexes known as 2d indexes and 2d sphere indexes using these indexes we can query geospatial data. Here, the 2d indexes support queries that are used to find data that is stored in a two-dimensional plane.

What is MongoDB index Key limit?

A collection cannot have more than 64 indexes. The length of the index name cannot be longer than 125 characters. A compound index can have maximum 31 fields indexed.

What is MongoDB index size?

stats(1024) , is used to get size of data and size of index on user collection in MongoDB. – for bytes: no need to pass any scaling factor. – for KB: 1024, – for MB: 1024*1024, – for GB: 1024*1024*1024.

What is indexing how MongoDB do indexing?

An index in MongoDB is a special data structure that holds the data of few fields of documents on which the index is created. Indexes improve the speed of search operations in database because instead of searching the whole document, the search is performed on the indexes that holds only few fields.

What is compound indexing in MongoDB?

Or in other words, compound indexes are those indexes where a single index field contains references to multiple fields. In MongoDB, the compound index can contain a single hashed index field, if a field contains more than one hashed index field then MongoDB will give an error.