Bruce Momjian <pgman@candle.pha.pa.us> writes:
> Certainly a shared cache would be good for apps that connect to issue a
> single query frequently. In such cases, there would be no local cache
> to use.
We have enough other problems with the single-query-per-connection
scenario that I see no reason to believe that a shared plan cache will
help materially. The correct answer for those folks will *always* be
to find a way to reuse the connection.
regards, tom lane