What is the method for cleaning the MongoDB file system?

The typical method for cleaning the MongoDB file system usually involves the following steps:

1. Compress file system: File system tools can be used to compress database files in order to save disk space.
2. Delete expired data: Regularly remove expired or no longer needed data to free up space.
3. Data migration: Moving data to other storage devices to free up file system space.
4. Data archiving: Archive infrequently accessed data to save file system space.
5. Data backup: regularly back up data and manage backup data to save file system space.
6. Monitor file system space: regularly check the usage of file system space and promptly address any shortage of space.