Re: [HACKERS] Custom compression methods

On Tue, Jun 23, 2020 at 4:00 PM Andres Freund <andres(at)anarazel(dot)de> wrote:
> https://postgr.es/m/20130621000900.GA12425%40alap2.anarazel.de is a
> thread with more information / patches further along.
>
> I confused this patch with the approach in
> https://www.postgresql.org/message-id/d8576096-76ba-487d-515b-44fdedba8bb5%402ndquadrant.com
> sorry for that. It obviously still differs by not having lower space
> overhead (by virtue of not having a 4 byte 'va_cmid', but no additional
> space for two methods, and then 1 byte overhead for 256 more), but
> that's not that fundamental a difference.

Wait a minute. Are we saying there are three (3) dueling patches for
adding an alternate TOAST algorithm? It seems like there is:

This "custom compression methods" thread - vintage 2017 - Original
code by Nikita Glukhov, later work by Ildus Kurbangaliev
The "pluggable compression support" thread - vintage 2013 - Andres Freund
The "plgz performance" thread - vintage 2019 - Petr Jelinek

Anyone want to point to a FOURTH implementation of this feature?

I guess the next thing to do is figure out which one is the best basis
for further work.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company