Look at Facebook/Meta. They use MySQL (plus some other stuff on top). Twitter was at the peak of being trendy and trying to make NoSQL work. It was quite literally an idoelogical vanity project.
Facebook invented Cassandra, so I don't get your point. And Twitter wasn't exactly a WordPress site doing a needless vanity migration.
I don't think "use MySQL" really means the same thing at that scale.
Facebook invented Cassandra, so I don't get your point. And Twitter wasn't exactly a WordPress site doing a needless vanity migration.
I don't think "use MySQL" really means the same thing at that scale.