MongoDB Query Analysis

MongoDB Query Analysis ensures that the indexes we establish are valid and is an important tool for performance analysis of query statements. MongoDB query analysis commonly used functions are:explain () and hint ().

1. Explain ():

Providing query information, using indexes and querying statistics, is beneficial to our optimization of indexes.

Examples of Use:

Db.users.find ({gender: "M"},{user_name:1,_id:0}). Explain ()

2. Hint ():

Forcing MongoDB to use a specified index (for improved query performance)

Examples of Use:

Db.users.find ({gender: "M"},{user_name:1,_id:0}). Hint ({gender:1,user_name:1})

MongoDB Query Analysis