| From: | Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com> |
|---|---|
| To: | "Tsunakawa, Takayuki" <tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com> |
| Cc: | Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Dave Cramer <pg(at)fastcrypt(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Jing Wang <jingwangian(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Libpq support to connect to standby server as priority |
| Date: | 2019-02-22 07:49:55 |
| Message-ID: | CAJrrPGeX3C+91ruJ1HcuUoknakqgPG5Sk_0AxGKd-YqGvVaRPQ@mail.gmail.com |
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On Fri, Feb 22, 2019 at 5:47 PM Tsunakawa, Takayuki <
tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com> wrote:
> From: Haribabu Kommi [mailto:kommi(dot)haribabu(at)gmail(dot)com]
> Here I attached first set of patches that implemented the prefer-read
> option
> > after reporting the transaction_read_only GUC to client. Along the lines
> > of adding prefer-read option patch,
>
> Great, thank you! I'll review and test it.
>
Thanks.
> > 3. Existing read-write code is modified to use the new reported GUC
> instead
> > of executing the show command.
>
> Is the code path left to use SHOW for older servers?
>
Yes, for older versions less than 12, still uses the SHOW command approach.
Regards,
Haribabu Kommi
Fujitsu Australia
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