[sgarland]

Amen. How this lie continues to be perpetuated as gospel is beyond me.

I can look at any company’s RDBMS who doesn’t have a full-time DB[A,RE] on staff and find ten things wrong very quickly. Duplicate indices, useless indices, suboptimal column types, bad or completely absent tuning, poor query performance…

It’s only when a company hits the top end of vertical scaling do they think, “maybe we should hire someone,” and the problem then is that some changes are extremely painful at that scale, and they don’t want to hear it.