[pgpool-hackers: 73] Re: Removing old query cache

Guillaume Lelarge guillaume at lelarge.info
Tue May 29 20:46:22 JST 2012


On Mon, 2012-05-28 at 10:50 +0900, Tatsuo Ishii wrote:
> Hi pgpool hackers,
> 
> pgpool-II 3.2 will have on memory query cache functionality. As you
> know pgpool also has old "query cache" and I would like to remove it
> in the near future.
> 
> Basically the new on memory query cache is better substitution for the
> old one. The old one is slow (because it uses PostgreSQL table as
> cache storage), and has no automatic cache invalidation when tables
> get updated. The only features that old one have but the new one do
> not have are:
> 
> - No limitation of cache result length
> - No limitation of cache storage size (as long as you have enough disk space)
> 
> My proposal is, in 3.2 we declare that the old query cache is
> obsoleted, and then remove it in 3.3.
> 
> Opinions? Suggestions?*

Seems good to me. People can still use the old, obsolete, solution for
one major version, and know that they will have to switch in next major
version.

So definitely +1.


-- 
Guillaume
http://blog.guillaume.lelarge.info
http://www.dalibo.com



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