Re: Proposal: Implement failover on libpq connect level.
Dave Page <dpage@pgadmin.org>
From: Dave Page <dpage@pgadmin.org>
To: Robert Haas <robertmhaas@gmail.com>
Cc: "Shulgin, Oleksandr" <oleksandr.shulgin@zalando.de>,
Andres Freund <andres@anarazel.de>,
Alvaro Herrera <alvherre@2ndquadrant.com>, Tom Lane <tgl@sss.pgh.pa.us>,
Albe Laurenz <laurenz.albe@wien.gv.at>, Victor Wagner <vitus@wagner.pp.ru>,
"pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>
Date: 2015-09-03T15:09:41Z
Lists: pgsql-hackers
On Thu, Sep 3, 2015 at 3:56 PM, Robert Haas <robertmhaas@gmail.com> wrote: > On Thu, Sep 3, 2015 at 4:00 AM, Shulgin, Oleksandr > <oleksandr.shulgin@zalando.de> wrote: >> I believe that having a floating IP for the master is much more practical >> approach and it doesn't require any patch to libpq or modification of the >> client connection settings. > > I think that's a great approach if all the machines are on the same > subnet. If they are in different datacenters, it doesn't work. > > The amount of opposition to this feature is remarkable considering > that it's available in Oracle, SQL Server, MongoDB, Cassandra, and > MySQL. See for example: > > http://docs.mongodb.org/manual/reference/connection-string/ > https://datastax.github.io/python-driver/getting_started.html > > This is a small patch with minimal to no downside implementing a > feature that is present in most or all of the major competing > products. We're really doing ourselves a disservice if we reject it. > I think it would be far better to progress to talking about what > design we'd be comfortable with, rather than kidding ourselves that a > feature that everyone else has and which somebody has taken the time > to implement (thus, obviously it has value for them) and which has > been discussed to general approval at PGCon developer meetings and > which has been endorsed on this thread by three committers is somehow > something that nobody really needs. Seriously? +100 -- Dave Page Blog: http://pgsnake.blogspot.com Twitter: @pgsnake EnterpriseDB UK: http://www.enterprisedb.com The Enterprise PostgreSQL Company
Commits
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libpq: Add target_session_attrs parameter.
- 721f7bd3cbcc 10.0 landed
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Remove superuser checks in pgstattuple
- fd321a1dfd64 10.0 cited
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Fix unwanted flushing of libpq's input buffer when socket EOF is seen.
- c405918858c0 9.6.0 cited