Thanks! Standardizing on MySQL because of internal expertise is definitely a great reason.
Re:'Check Your Backups Work' Day
by hamandcheese on Wednesday February 01, 2017 @10:31AM
(#13541431)
GitHub also migrated persistent data out of Redis and in to MySQL, with their expertise in MySQL as one of the motivating factors.
https://githubengineering.com/moving-persistent-data-out-of-...
We use it because it works well for us. We've put a lot of work into making MySQL scale for us to the point where it's a very well supported system and one of the main choices for a lot of storage decisions.
We even use MySQL as a queue for Facebook Messenger. More details about this:
https://www.youtube.com/watch?v=eADBCKKf8PA
https://code.facebook.com/posts/820258981365363/building-mob...