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Re: MySQL interview, no mention of PostgreSQL

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Neil Conway <neilc(at)samurai(dot)com>
Cc: Josh Berkus <josh(at)agliodbs(dot)com>,"Arcadius A(dot)" <ahouans(at)sh(dot)cvut(dot)cz>,PostgreSQL Advocacy <pgsql-advocacy(at)postgresql(dot)org>
Subject: Re: MySQL interview, no mention of PostgreSQL
Date: 2003-10-17 11:23:07
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-advocacy
Neil Conway wrote:
> On Thu, 2003-10-16 at 12:54, Josh Berkus wrote:
> > While one could write  a utility in Postgres to create/process the file, the 
> > "live" version of pg_hba.conf *must* be outside the database.   If our ACL 
> > was in the database, then how would we know who has the rights to read the 
> > ACL?
> I don't see why this is a show-stopping problem. Can you elaborate?

We don't want to fire up a backend until we know this is a valid user. 
You could easily bring a server to a standstill by just sending false
connection requests.  Sure, you can still do that by flooding the
machine, but a database lookup is significantly more expensive than
checking a connection packet.

  Bruce Momjian                        |
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073

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