$log Operator - ( MongoDB Misc )

MongoDB provides several operators that can be used to modify data and perform various operations on the database. One of these operators is the $log operator, which is used to create log messages in the MongoDB server logs.

Syntax

The syntax for the $log operator is as follows:

{ $log : { message : "log message" } }

The message field should contain the log message that you want to include in the logs.

Example

Here is an example of how to use the $log operator to create a log message in the MongoDB server logs:

db.collection.update(
   { _id: ObjectId("5c12510532f9e32c740991db") },
   { $set: { status: "inactive" }, $log: { message: "User account deactivated" } }
)

This code will update a document in the collection collection and include a log message in the MongoDB server logs indicating that the user account has been deactivated.

Output

When using the $log operator, the log message specified in the `` field will be included in the MongoDB server logs. The output of the log message will depend on your MongoDB server configuration and the logging level that is set.

Explanation

The $log operator is used to create log messages in the MongoDB server logs. This can be useful for tracking changes to the database and monitoring the activity of your application.

Use

The $log operator can be used in a variety of situations where you want to include custom log messages in the MongoDB server logs. This can be useful for debugging, tracking changes to the database, and monitoring application activity.

Important Points

• The $log operator is used to create log messages in the MongoDB server logs.
• The message field should contain the log message that you want to include in the logs.
• The output of the log message will depend on your MongoDB server configuration and the logging level that is set.

Summary

In this page, we discussed the $log operator in MongoDB. We covered the syntax, example, output, explanation, use, and important points of the $log operator. The $log operator is a powerful tool for tracking changes to the database and monitoring application activity in MongoDB.