pg.ddx.io  pgsql-hackers@postgresql.org mailing list archive  
help / color / mirror / Atom feed
From: Andy Fan <zhihuifan1213@163.com>
To: Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com>
Cc: Kartyshov Ivan <i.kartyshov@postgrespro.ru>
Cc: Alexander Korotkov <aekorotkov@gmail.com>
Cc: Euler Taveira <euler@eulerto.com>
Cc: Thomas Munro <thomas.munro@gmail.com>
Cc: Peter Eisentraut <peter@eisentraut.org>
Cc: Amit Kapila <amit.kapila16@gmail.com>
Cc: Dilip Kumar <dilipbalaut@gmail.com>
Cc: Peter Smith <smithpb2250@gmail.com>
Cc: pgsql-hackers@lists.postgresql.org
Subject: Re: [HACKERS] make async slave to wait for lsn to be replayed
Date: Tue, 02 Apr 2024 19:43:46 +0800
Message-ID: <87msqcc7gj.fsf@163.com> (raw)
In-Reply-To: <CALj2ACWDWKw5k6itqNSKwznTpa72XRoCqR4SdWqS8xM8n_zhBA@mail.gmail.com>
References: <CAPpHfdtiGgn0iS1KbW2HTam-1+oK+vhXZDAcnX9hKaA7Oe=F-A@mail.gmail.com>
	<5358d911a08ef2952b1e9f74062426ee@postgrespro.ru>
	<CAPpHfdsQNqQoFN_OosMUkZWLE-s=or=t+XVEHF5AGuMbdBMpew@mail.gmail.com>
	<CAPpHfdvZXSiVCqFNMzpk7Zhxk4hB6T55b+79J1nKLotNFL25Qw@mail.gmail.com>
	<CA+hUKGKXXP8ZgTfFfjhv77ALC-ZKcejR4pdfrfgVqYrG_75zeQ@mail.gmail.com>
	<CAPpHfdv1aXn-oUQNODQ0B6W7JC=t_S1b64V5DAx-HP+KOV-6Lg@mail.gmail.com>
	<88449be3-93e8-4d78-a0d8-c37e4cf26850@app.fastmail.com>
	<CAPpHfduGLJgQERBmQ+=bsr4Oy6F8HCVgQpCYva6=Ncib2X2oUA@mail.gmail.com>
	<8aec133e-5d7f-4fa1-8223-257647dd1ccd@app.fastmail.com>
	<CAPpHfds7M2R0PLGzGa+Y6G+n1z1Na-t5QH2Wsv9iN3n=tcFyEw@mail.gmail.com>
	<432592e4d09341d41bf5cad1df26b3f3@postgrespro.ru>
	<CAPpHfdtmbUOfNWk_ofZyQWd5kztyXhCVmUHYcSr1-JuYO0DyUw@mail.gmail.com>
	<CALj2ACUhgYVHYH5JeNKro1v+SqmDcGyNHn0smWpsQMDLikrN=w@mail.gmail.com>
	<CAPpHfdsV856ca8V=G8DFEViDP7v1hMtDUgOEdBE5dV45a3NKKw@mail.gmail.com>
	<CALj2ACWNKB2fRwaah-jv5stZcisPcwOtsOZdz6+qQWtpG=or8g@mail.gmail.com>
	<CAPpHfdtGh9Gmx-O5qhcSGJmn5z7-yFb7NGqTrM2J94E14w8EOg@mail.gmail.com>
	<87le5wa1dw.fsf@163.com>
	<CAPpHfdv4v-UrS90rSqp8wz9zsWpB7VB5bsPVAoETHWozkDwumA@mail.gmail.com>
	<87h6gk9nvc.fsf@163.com>
	<6eb8c9f22b075964f502080dadc16cb2@postgrespro.ru>
	<CALj2ACWDWKw5k6itqNSKwznTpa72XRoCqR4SdWqS8xM8n_zhBA@mail.gmail.com>


Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com> writes:

> On Tue, Apr 2, 2024 at 3:41 PM Kartyshov Ivan
> <i.kartyshov@postgrespro.ru> wrote:
>>
>> 8 years, we tried to add this feature, and now we suggest the best way
>> for this feature is to commit the minimal version first.
>
> Just curious, do you or anyone else have an immediate use for this
> function? If yes, how are they achieving read-after-write-consistency
> on streaming standbys in their application right now without a
> function like this?

The link [1] may be helpful and I think the reason there is reasonable
to me.

Actually we also disucss how to make sure the "read your writes
consistency" internally, and the soluation here looks good to me.

Glad to know that this patch will be committed very soon. 

[1]
https://www.postgresql.org/message-id/CAPpHfdtuiL1x4APTs7u1fCmxkVp2-ZruXcdCfprDMdnOzvdC%2BA%40mail.g... 

-- 
Best Regards
Andy Fan






view thread (216+ messages)  latest in thread

Message-ID: <87msqcc7gj.fsf@163.com>
Permalink:  ../87msqcc7gj.fsf@163.com/
Also on:    postgresql.org/message-id/87msqcc7gj.fsf@163.com

 · 

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: pgsql-hackers@postgresql.org
  Cc: zhihuifan1213@163.com, bharath.rupireddyforpostgres@gmail.com, i.kartyshov@postgrespro.ru, aekorotkov@gmail.com, euler@eulerto.com, thomas.munro@gmail.com, peter@eisentraut.org, amit.kapila16@gmail.com, dilipbalaut@gmail.com, smithpb2250@gmail.com, pgsql-hackers@lists.postgresql.org
  Subject: Re: [HACKERS] make async slave to wait for lsn to be replayed
  In-Reply-To: <87msqcc7gj.fsf@163.com>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox