Rails - Dec 2005 - Cache sweeping based on age

I''ve written a Rails application of middling complexity that makes use
of Ajax, and at some point, a particular link_to_remote calls an
action that eventually results in nearly 250K worth of generated HTML.
Takes about twenty seconds to do this on my hardware setup, and it''s
unacceptably slow for the purposes of my application. Rough profiling
shows that the main bottleneck in this process is actually the
execution of a complex set of templates, so this would definitely
benefit greatly from caching of some kind.

I''m wondering how to go about expiring the cache though. Here, I have
absolutely no need for any form of that fancy half-observer,
half-filter stuff that goes on in the Caching::Sweeper. All I want to
do is expire the cache after 5 minutes. If any cached page is more
than five minutes old, then basta, regenerate it.

What''s the simplest way to do this?

On Dec 4, 2005, at 9:00 PM, Dido Sevilla wrote:
> I''ve written a Rails application of middling complexity that makes
use
> of Ajax, and at some point, a particular link_to_remote calls an
> action that eventually results in nearly 250K worth of generated HTML.
> Takes about twenty seconds to do this on my hardware setup, and
it''s
> unacceptably slow for the purposes of my application. Rough profiling
> shows that the main bottleneck in this process is actually the
> execution of a complex set of templates, so this would definitely
> benefit greatly from caching of some kind.
>
> I''m wondering how to go about expiring the cache though. Here, I
have
> absolutely no need for any form of that fancy half-observer,
> half-filter stuff that goes on in the Caching::Sweeper. All I want to
> do is expire the cache after 5 minutes. If any cached page is more
> than five minutes old, then basta, regenerate it.
>
> What''s the simplest way to do this?
> _______________________________________________
> Rails mailing list
> Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
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>
The simplest way is to use a cron job that calls script/runner and  
expires the cache. Or even simpler just a cromn job that deletes the  
chached files from public/.

Cheers-
-Ezra Zygmuntowicz
Yakima Herald-Republic
WebMaster
http://yakimaherald.com
509-577-7732
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