Can you back up your know-how every time if you are worried about computer damage?

Not every time you backup know. Backup refers to the copying of data from a file system or database system; in the event of a disaster or incorrect operation, the system can be easily and promptly restored to valid data and normal operation. Zhihu website doesn't provide official backup tool and the data format is not public, so you can't use common backup tool to backup, and the content is updated frequently, the backup data may be inaccurate or outdated. So worrying about computer damage can't backup Zhihu every time.