[ajmurmann]

Maybe the distinction here would be one of which scope the respective maintainer cares about. For Shopify MySQL is mostly a black box, they don't need to re-implement their own atomic commit protocol, network partition detection etc., since MySQL did that for them. Implementors of MySQL did have to solve these distributed systems problems though and pick their CAP trade-offs, but I guess that's not the scope Shopify cares about here.