I don't know the details of how Heroku implements their hosted postgres service,... | Hacker News

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		snacktaster on March 6, 2023 \| parent \| context \| favorite \| on: Reliability: It’s not great I don't know the details of how Heroku implements their hosted postgres service, but I'm _guessing_ that it's just a bunch of PG servers running on EC2 instances. There's probably a lot of CPU stealing "noisy neighbors" going on. But yeah, I've also experienced Heroku's PG databases being dog-slow compared to RDS for the same workloads.

mixmastamyk on March 6, 2023 [–]

They're probably using older or cheaper instance types. By not upgrading while charging the same or more over time, one can skim more profit.

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