| From: | Andrey Borodin <x4mmm(at)yandex-team(dot)ru> |
|---|---|
| To: | Michael Paquier <michael(at)paquier(dot)xyz> |
| Cc: | Justin Pryzby <pryzby(at)telsasoft(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Peter Geoghegan <pg(at)bowt(dot)ie>, Andres Freund <andres(at)anarazel(dot)de> |
| Subject: | Re: Different compression methods for FPI |
| Date: | 2021-06-17 08:18:52 |
| Message-ID: | 6216BFD5-EFE8-4BB4-8939-FFD9434D5612@yandex-team.ru |
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| Lists: | pgsql-hackers |
> 17 июня 2021 г., в 11:57, Michael Paquier <michael(at)paquier(dot)xyz> написал(а):
>
> On Thu, Jun 17, 2021 at 11:45:37AM +0500, Andrey Borodin wrote:
>> Konstantin, Daniil and Justin are working on compressing libpq
>> [0]. That would make walsender compress WAL automatically.
>> And we (at least I and Dan) are inclined to work on compressing
>> on-disk WAL as soon as libpq compression will be committed.
>
> What's the relationship between libpq and WAL?
walsender transmit WAL over regular protocol. Compressing libpq leads to huge decrease of cross-datacenter traffic of HA clusters.
In fact that's the reason why Daniil is working on libpq compression [0]. But that's matter of other thread.
Best regards, Andrey Borodin.
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