[pmwiki-users] Speed up PmWiki

[Thomas Bley]

Hello,

I modified the ticket a bit. Detecting dependencies automatically is a 
bit too much for a static caching, so I think it is enough if users can 
define dependencies in the (:static :) parameter.
So it generally works like this: Get-requests are cached. If a user 
modifies a page with a post-request, a new static html file is written 
and mod_rewrite can redirect to it. After changing a page, all static 
files of the dependencies are also removed and can be recreated when the 
page is called for the next time. Users will always see the latest pages.
Performance (tested with 1.8GHz, 1GB, ide storage): Without the static 
cache I have 9 requests per second and with it is 116 requests per 
second, so it is a good option (see attachments).

http://pmwiki.org/wiki/PITS/00966

Regards,
Thomas


Martin Spindler wrote:
> Hi,
>
> Christophe David wrote:
>   
>> I wonder how to define the dependencies adequately, as there are so
>> many things that can impact a page...  In particular,
>> PageTextVariables changes seem to be extremely difficult to track
>> efficiently...
>>   
>>     
> Yes. That's why deleting *all* cached pages after an edit/new action 
> should do the trick.
> My suggestions/wishlist was merely motivated by a certain kind of usage 
> case, which is:
>
> * one author (very infrequent updates)
> * many readers (frequent reads)
>
> This allows the deletion of the whole cache every time *something* has 
> changed. It's probably best, just to forget everything I said about 
> dependencies, because this will only introduce complexity.
>   
>> Do you have some kind of measures that show the actual benefit of
>> using mod-rewrite against letting the built-in PmWiki caching do its
>> job ?
>>   
>>     
> As I am not the author/ initiator of the aggressive static cache idea, I 
> am not able to give you any information about how it works.
>   
>> Is the gain really worth the extra complexity ?
>>   
>>     
> There is no extra complexity, when you just delete *every* cached page 
> after an edit/delete action was executed. Nevertheless, in some cases it 
> might be helpful to delete cached pages of *one* group only (for example).
>
> Martin.
>
>
>
>
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>
>   

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