From: Jeff Davis <jdavis@postgresql.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Add cache for recomputeNamespacePath().
Date: Wed, 15 Nov 2023 02:03:29 +0000
Message-ID: <E1r35FZ-005Uxv-HL@gemulon.postgresql.org> (raw)
Add cache for recomputeNamespacePath().
When search_path is changed to something that was previously set, and
no invalidation happened in between, use the cached list of namespace
OIDs rather than recomputing them. This avoids syscache lookups and
ACL checks.
Important when the search_path changes frequently, such as when set in
proconfig.
An earlier version of this patch was reviewd by Nathan Bossart. This
version simplifies a few things and is safer in case of OOM.
Discussion: https://www.postgresql.org/message-id/abf4ce8804e0e05dff8c1725ae6a8ed28b7d66e0.camel%40j-davis.com
Reviewed-by: Nathan Bossart
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/f26c2368dcaef7519d8400ca958c4b5742cdbd46
Modified Files
--------------
src/backend/catalog/namespace.c | 404 +++++++++++++++++++++++++++++++++-------
1 file changed, 341 insertions(+), 63 deletions(-)
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To: pgsql-committers@postgresql.org
Cc: jdavis@postgresql.org, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Add cache for recomputeNamespacePath().
In-Reply-To: <E1r35FZ-005Uxv-HL@gemulon.postgresql.org>
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