From: | Thomas Kellerer <spam_eater(at)gmx(dot)net> |
---|---|
To: | pgsql-jdbc(at)postgresql(dot)org |
Subject: | Re: Does the JDBC connection failover require Postgres 10? |
Date: | 2017-11-03 16:59:30 |
Message-ID: | oti79d$ivs$1@blaine.gmane.org |
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Lists: | pgsql-jdbc |
David G. Johnston schrieb am 03.11.2017 um 15:19:
> On Fri, Nov 3, 2017 at 4:53 AM, Thomas Kellerer <spam_eater(at)gmx(dot)net <mailto:spam_eater(at)gmx(dot)net>>wrote:
>
> The Postgres JDBC driver offers a way to specify multiple hosts in the connection URL:
>
> https://jdbc.postgresql.org/documentation/head/connect.html#connection-failover
>
> However, it is unclear to me if that feature relies on the libpq feature introduced in Postgres 10:
>
> https://www.postgresql.org/docs/current/static/libpq-connect.html#libpq-multiple-hosts
>
> or if this is handled by the driver internally?
>
>
> In short, it is handled by the driver internally.
>
> There is no server support (which make sense given failure to connect
> would preclude the presence of a server) in the libpq implementation
> of this behavior - i.e., its not a protocol thing but a client
> implementation. The JDBC driver does not utilize libpq at all, it
> directly implements the PostgreSQL communication protocol.
>
> David J.
Thanks, apparently I mis-read the release notes
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