Yep, but you can "buy" HA from any DB provider (Amazon RDS, compose, etc.) until you're big enough to dedicate resources to solve that particular problem. My c

Yep, but you can "buy" HA from any DB provider (Amazon RDS, compose, etc.) until you're big enough to dedicate resources to solve that particular problem. My comment doesn't necessarily contradict the article. I only mean to point out that a general purpose "non-optimized" thing still fit a whole lot of companies out there, depending on their scale. EDIT: Although I concede that yeah some DB tech makes it easier to configure HA systems, if you can live with the downsides.