[swyx]

so is a good rule of thumb "put your users in postgres first until 100-500k, then revisit if you need to move to a dedicated solution"?

[IshKebab]

Probably not unless you like rearchitecting your entire security system when you already have 500k users!

[tuatoru]

That's probably easier than if you have only 2k. Although the special cases in the 500k might squeal a bit, they're more ignorable.