What is Mongoose indexing and how does it work?

What is Mongoose indexing and how does it work?

Mongoose indexing is a feature that allows you to create indexes on your MongoDB collections to improve query performance. It works by creating a data structure that allows for faster retrieval of documents.

Why should I use indexing in my MongoDB application?

Indexing can significantly speed up query performance, especially for large datasets. It helps in quickly locating the documents without scanning the entire collection.

Can you show me how to create an index using Mongoose?

Sure! You can create an index in Mongoose by using the index method in your schema definition. For example: schema.index({ fieldName: 1 }); This creates an ascending index on fieldName.

Are there any downsides to using indexes?

Yes, while indexes improve read performance, they can slow down write operations and consume additional disk space. It's important to use them judiciously.