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What is the maximum size of index key limit MongoDB?
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 index key limit?
The maximum number of fields in an index key is 16.
What is cursor limit?
limit() method is used to specify the maximum number of documents the cursor will return. Syntax: cursor.limit() NOTE: You must apply limit() to the cursor before retrieving any documents from the database. Use limit() to maximize performance and prevent MongoDB from returning more results than required for processing.
Is there an index key limit on MongoDB?
Inserting Documents Exceeding Index Key Limit. MongoDB will not insert any document into an indexed collection if the indexed field value of this document exceeds the index key limit. Same is the case with mongorestore and mongoimport utilities.
Is there a storage limit for MongoDB 3.0?
The MongoDB’s storage limit on different operating systems are tabulated below as per the MongoDB 3.0 MMAPv1 storage engine limits. The MMAPv1 storage engine limits each database to no more than 16000 data files.
How does an ascending or descending index work in MongoDB?
In addition to the MongoDB-defined _id index, MongoDB supports the creation of user-defined ascending/descending indexes on a single field of a document. For a single-field index and sort operations, the sort order (i.e. ascending or descending) of the index key does not matter because MongoDB can traverse the index in either direction.
How many fields in a compound Index in MongoDB?
There can be no more than 32 fields in a compound index. You cannot combine the $text query, which requires a special text index, with a query operator that requires a different type of special index. For example you cannot combine $text query with the $near operator.