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Re: PostgreSQL as a local in-memory cache - Mailing list pgsql-performance

From Bruce Momjian
Subject Re: PostgreSQL as a local in-memory cache
Date
Msg-id 201006231937.o5NJbKp05127@momjian.us
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In response to Re: PostgreSQL as a local in-memory cache  (Tom Lane)
Responses Re: PostgreSQL as a local in-memory cache  (Pavel Stehule)
Re: PostgreSQL as a local in-memory cache  (Robert Haas)
List pgsql-performance
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Tom Lane wrote:
> Dimitri Fontaine <> writes:
> > Josh Berkus <> writes:
> >> a) Eliminate WAL logging entirely

If we elimiate WAL logging, that means a reinstall is required for even
a postmaster crash, which is a new non-durable behavior.

Also, we just added wal_level = minimal, which might end up being a poor
name choice of we want wal_level = off in PG 9.1.  Perhaps we should
have used wal_level = crash_safe in 9.0.

I have added the following TODO:

    Consider a non-crash-safe wal_level that eliminates WAL activity

        * http://archives.postgresql.org/pgsql-performance/2010-06/msg00300.php

--
  Bruce Momjian  <>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + None of us is going to be here forever. +

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