Direction of Index
The direction of an index refers to the order in which MongoDB stores and retrieves the indexed field values. MongoDB supports two index directions:
- Ascending (1): The default direction where values are stored in ascending order.
- Descending (-1): Values are stored in descending order.
Why Does the Direction of Index Matter in MongoDB?
In MongoDB, the direction of an index plays a crucial role in optimizing query performance and efficiency. When creating indexes on fields within collections, developers have the option to specify the direction of the index (ascending or descending).
In this article, we’ll explore why the direction of an index matters in MongoDB and how it affects query performance which provides clear examples with outputs to explain these concepts in an easy-to-understand manner for beginners.