[Zope] Re: login page problem

Chris Withers chris at simplistix.co.uk
Wed Apr 6 05:04:51 EDT 2005


Jens Vagelpohl wrote:
> "negative" caching means that there is a separate cache to cache failed 
> user lookups for a while and return a failure immediately instead of 
> re-trying the user lookup doing a (possibly expensive) user search in 
> the underlying backend.It's a little bit like Squids negative_ttl, which 
> is used to specify a duration for caching error responses. The negative 
> cache allows the backend to "recover" and/or prevents backend 
> overloading because otherwise every failing lookup would hit the backend 
> again and again.

Oh right, well, again, should be fairly trivial to setup with python 
scripts and RAMCacheManagers.

cheers,

Chris

-- 
Simplistix - Content Management, Zope & Python Consulting
            - http://www.simplistix.co.uk


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