At my previous company when we made the decision to go with Vitess it was because we had confidence that we could accomplish our scalability goals using Vitess for our critical system in a predictable amount of time with a predictable amount of effort and with a safe, incremental, non-disruptive, revertable, testable rollout without downtime.

We had no way to have that kind of confidence about migrating off MySQL to an entirely different database (like TiDB). If we'd been addressing a new storage use case from scratch instead of migrating an existing one, the case for using something other than MySQL might have been stronger.

yup lots of companies do agree https://github.com/kokizzu/list-of-tech-migrations

It seems that, on that list, it's almost entirely Chinese companies that have migrated to TiDB.

Thanks for the list (and the graph), very interesting!