On: Why Uber Engineering Switched from Postgres to MyS...

[yeukhon]

I believe they use it for almost everything. They built all the graphs on top of MySQL data. I don't know what permanent storage is, but if you are referring to storing images and videos, I doubt. Highly doubt that. They may be storing pointers, but as a file system, I doubt. But I wouldn't know for sure, I don't work there. Oh, they do have Cassandra (well they built Cassandra)...

[jhartmann → yeukhon]

They use a system called haystack for binary large object storage. They very much don't use mysql for those.

[yeukhon → jhartmann]

That's my feeling they wouldn't use MySQL as a blob store.