How to make a backup of a large mysql database so that the backend does not fall?

Question

Web development

Faced with the fact that our site went down. It turned out that devops started backing up the database. the base is not that very big, but under 10 gigs. And how to make sure that the site does not fall during backup? In general, how to ensure the uninterrupted operation of the site in such cases? Mirroring?

Answer 1

Google: "database replication", respectively, after starting the replica, back up there