Re: Replication identifiers, take 4

From: Andres Freund <andres(at)anarazel(dot)de>
To: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
Cc: Petr Jelinek <petr(at)2ndquadrant(dot)com>, Simon Riggs <simon(dot)riggs(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Steve Singer <steve(at)ssinger(dot)info>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Replication identifiers, take 4
Date: 2015-04-20 08:19:56
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On 2015-04-20 11:09:20 +0300, Heikki Linnakangas wrote:
> Can you name some of the bigger problems you'd have?

Several parts of the system are O(#max_replication_slots). Having 100k
outgoing logical replication slots is going to be expensive.

Nothing unsolvable, but the 65k 16 bit limit surely isn't going to be
the biggest problem.


Andres Freund

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