Re: Retaining execution plans between connections?

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От Pandurangan R S
Тема Re: Retaining execution plans between connections?
Дата
Msg-id 5e744e3d0601200135q41922750o4cbeb12521e2a61e@mail.gmail.com
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Ответ на Retaining execution plans between connections?  (James Russell <internationalhobo@gmail.com>)
Список pgsql-performance
you could use pgpool

http://pgpool.projects.postgresql.org/


On 1/20/06, James Russell <internationalhobo@gmail.com> wrote:
> Hi there,
>
>  I am running a website where each page connects to the DB to retrieve and
> write information. Each page load uses a separate connection (rather than
> just sharing one as is the common case) because I use a lot of transactions.
>
>  I am looking to speed up performance, and since each page executes a static
> set of queries where only the parameters change, I was hoping to take
> advantage of stored procedures since I read that PostgreSQL's caches the
> execution plans used inside stored procedures.
>
>  However, the documentation states that this execution plan caching is done
> on a per-connection basis. If each page uses a separate connection, I can
> get no performance benefit between pages.
>
>  In other words, there's no benefit to me in putting a one-shot query that
> is basically the same for every page (e.g. "SELECT * FROM users WHERE
> user_name='<username>'") inside a stored proc, since the generated execution
> plan will be thrown away once the connection is dropped.
>
>  Has anyone found a way around this limitation? As I said, I can't share the
> DB connection between pages (unless someone knows of a way to do this and
> still retain a level of separation between pages that use the same DB
> connection).
>
>  Many thanks,
>
>  James
>

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