Bruce Momjian <pgman@candle.pha.pa.us> writes:
> Basically, total connections is to be set larger than you think you will
> ever need, while you expect per-db to be hit, and if something keeps
> trying to connect and failing, we may get very bad connection
> performance for other backends.
Hmm, I see your point. A per-db limit *could* be useful even if it's
set high enough that you don't expect it to be hit ... but most likely
people would try to use it in a way that it wouldn't be very efficient
compared to a client-side solution.
regards, tom lane