I'm pretty sure Facebook is still running it. They've done a migration to 8.0 a couple of years after it came out (it was a massive release). https://engineeri

I'm pretty sure Facebook is still running it. They've done a migration to 8.0 a couple of years after it came out (it was a massive release). https://engineering.fb.com/2021/07/22/core-infra/mysql https://engineering.fb.com/2021/07/22/core-infra/mysql