Re: Could postgres12 support millions of sequences? (like 10 million)

And I think that "care about gaps -> sequence doesn't work" is a
knee-jerk reaction. It's similar to "can't parse HTML with regexps".
True in the general case, and therefore people tend to blurt it out
every time the topic comes up. But not necessarily true in specific
cases. As I wrote above, there is no perfect solution - so you have to
think about the actual requirements and the consequences of various
solutions - and maybe using a sequence is the best (or least bad)
solution.