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From Ian Holsman <>
Subject Re: mod-cache-requestor plan
Date Wed, 20 Jul 2005 01:33:33 GMT
Parin Shah wrote:
>>you should be using a mix of
>># requests
>>last access time
>>cost of reproducing the request.
> Just to double check, we would insert entry into the 'refresh queue'
> only if the page is requested and the page is soon-to-be-expired. once
> it is in the queue we would use above parameters to calculate the
> priority. Is this correct? or let me know If I have mistaken it.
thats the idea.
refresh the most-popular pages first.

>>see memcache_gdsf_algorithm() in mod_mem_cache.c for an implementation
>>of this, which assumes 'length' of request is related to the cost of
>>reproducing the request.
>>the priority queue implementation is sitting in mod_mem_cache, and could
>>be used to implement the 'refresh' queue I would think.
> I feel comfortable with mod-cache and mod-mem-cache code now. but we
> also need to start new thread/process for mod-cache-requester when
> server starts. I am not too sure how we could implement it. any
> pointers to the similar piece of code would be really helpful to me.
I don't have any code which does this to share with you (others might 
know of some).

> Thanks,
> Parin.

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