On Thu, 8 Jun 2023 at 11:15, Jan Wieck <j...@wi3ck.info> wrote: > On 6/8/23 10:56, Dave Cramer wrote: > > > > > > > > > > On Thu, 8 Jun 2023 at 10:31, Jan Wieck <j...@wi3ck.info > > <mailto:j...@wi3ck.info>> wrote: > > > > On 6/8/23 09:53, Jan Wieck wrote: > > > On 6/8/23 09:21, Dave Cramer wrote: > > > The server doesn't know about all the clients of the pooler, does > > it? It > > > has no way of telling if/when a client disconnects from the > pooler. > > > > Another problem that complicates doing it in the server is that the > > information require to (re-)prepare a statement in a backend that > > currently doesn't have it needs to be kept in shared memory. This > > includes the query string itself. Doing that without shared memory > in a > > pooler that is multi-threaded or based on async-IO is much simpler > and > > allows for easy ballooning. > > > > > > I don't expect the server to re-prepare the statement. If the server > > responds with "statement doesn't exist" the client would send a prepare. > > Are you proposing a new libpq protocol version? >
I believe we would need to add this to the protocol, yes. Dave > > > Jan >
