Mongoose Aggregation vs Query: What's the Difference?

What is the difference between Mongoose aggregation and a simple query?

Mongoose aggregation is used for processing data records and returning computed results, while a simple query retrieves documents directly from the database.

Can you give me an example of when to use aggregation?

Sure! Use aggregation when you need to perform operations like grouping, filtering, or sorting data, such as calculating the average price of products.

Are there performance differences between the two?

Yes, aggregation can be more resource-intensive than simple queries, especially with large datasets, but it provides more powerful data manipulation capabilities.

How do I write an aggregation pipeline in Mongoose?

You can use the aggregate() method on your model, passing an array of stages like match, group, and sort to define your pipeline.