Introduction to MongoDB collection.storageSize() Method

storageSize() is a method in MongoDB that can be used to retrieve the storage size of a collection. This article will introduce the syntax, usage scenarios, examples, and conclusions of this method.

Syntax

The syntax of the storageSize() method is as follows:

db.collection.storageSize()

Here, db.collection represents the collection for which information is to be retrieved.

Usage Scenarios

The storageSize() method is typically used to retrieve the storage size of a collection, i.e., the amount of space the collection occupies on disk. This method can help you understand the actual storage situation of a collection and optimize and tune it accordingly.

Example

Here is an example of using the storageSize() method to retrieve the storage size of a collection.

Assume we have a collection called products containing the following four documents:

{ "_id": 1, "name": "Product 1", "price": 10 }
{ "_id": 2, "name": "Product 2", "price": 20 }
{ "_id": 3, "name": "Product 3", "price": 30 }
{ "_id": 4, "name": "Product 4", "price": 40 }

We can use the following code to retrieve the storage size of the products collection:

db.products.storageSize()

After executing the above code, the following result will be returned:

16384

Conclusion

The storageSize() method is a method in MongoDB that can be used to retrieve the storage size of a collection. When using this method, you only need to specify the collection for which information is to be retrieved. After executing the method, the amount of space the collection occupies on disk will be returned.