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Re: [HACKERS] Revised proposal for libpq and FE/BE protocol changes

From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: tgl(at)sss(dot)pgh(dot)pa(dot)us (Tom Lane)
Cc: pgsql-hackers(at)postgreSQL(dot)org, pgsql-interfaces(at)postgreSQL(dot)org
Subject: Re: [HACKERS] Revised proposal for libpq and FE/BE protocol changes
Date: 1998-04-29 16:04:41
Message-ID: 199804291604.MAA18436@candle.pha.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-interfaces
> That was something I asked about a few days ago, and didn't get any
> responses suggesting that anyone thought it was likely to happen.
> 
> We would need wholesale changes everywhere in the protocol to support
> concurrent queries: answers and errors coming back would have to be
> tagged to indicate which query they apply to.  The lack of a tag in
> the cancel message isn't the controlling factor.
> 
> In the current system architecture, much the easiest way to execute
> concurrent queries is to open up more than one connection.  There's
> nothing that says a frontend process can't fire up multiple backend
> processes.  I think this is probably sufficient, because I don't
> foresee such a thing becoming really popular anyway.

If we can remove the exec() in 6.4, that will make backend startup even
quicker.


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