MySQL backup tips

From https://hackernoon.com/elephant-in-the-room-database-backup-574da50e6d88

For instance, mysqldump will take dumps conforming to the client’s character set, and your favorite emojis such as 🍣 and 🍺 in utf8mb4 could be corrupt and replaced by ? in the backup. If you have never checked, do it right now. Just set--default-character-set=binaryoption — you’re welcome.

Or if you missed the --single-transaction option, you are likely to have inconsistent backups (e.g. item changed hands but money didn’t transfer) that are never easy to spot even if you regularly test the recovery procedure manually.

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