A log is a file that records the communications between a system and its users, or a data-gathering tool that records the type, content, and time of transactions made by a person from a system terminal. We've put up a list of some best practises for setting up logging in their applications.
Node.js logging can be done in a variety of ways. To improve logging, we can use the built-in features or one of the many popular packages. Logs can be used to analyse user behaviour and the application's general health.
If your company has multiple servers or services that create log files, reviewing them to find the causes of troubles or to find security breaches, takes up much time.