Howto rebuild custom cache runing cron?

167 Posts

johnxx Reply #1, 11 years, 8 months ago

I created a cutom cache with getCache for a json resource generated with a time-consuming snippet/query.

[[!getCache?
    &element=`jsonquery`
    &cacheExpires=`0`
    &cacheKey=`nightrun`
    &cacheElementKey=`nightrun`
]]

How may I write a cron file in order to rebuild the custom json cache every nights?

The following 'refresh' method doesn't really rebuild the custom cache but delete it : the cache will be rebuild next time the resource will be called :

$modx->cacheManager->refresh(array(
    'nightrun' => array()
));

It's why I'd like to write a cron job to tell to modx : rebuild the custom getCache/cacheKey 'nightrun' cache every nights?

Help welcome

This question has been answered by romain. See the first response.

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romain Reply #2, 11 years, 8 months ago

Hi johnxx,

I'd say the easiest/fastest solution would be to perform a cURL request to your resource once the cache has been cleared.

Another option could be to hook on "OnCacheUpdate" system event, check if your custom partition is present, and if so execute your logic to "rebuild" your cache (which could be a simple cURL request).

One more complex solution would be to build your own cache manager service, which you would have to "register" using the 'modCacheManager.class' system setting (see https://github.com/modxcms/revolution/blob/master/core/model/modx/modx.class.php#L659).

The way it's currently handled is that a method is called, according to the partition name (see https://github.com/modxcms/revolution/blob/master/core/model/modx/modcachemanager.class.php#L563-589), defaulting to just "clearing" the partition.

Hope that makes sense and will help a bit

Cheers

@modx_fr | Github | modx.fr
@rtripault | Github | melting-media.com

24,544 Posts

BobRay Reply #3, 11 years, 8 months ago

The RefreshCache snippet has a 'cron' branch at GitHub. It should run as a cron job to refresh all resources on the site using cURL.

https://github.com/BobRay/RefreshCache/tree/cron

Let me know if it works for you.

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167 Posts

johnxx Reply #4, 11 years, 8 months ago

cURL works fine but I've had to disable xFPC extra on my test MODX site to get the expected result.

@BobRay; I missed that, I'll test it!

Thanks!

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Développeur MODX / Webdesign / Solutions web

Answered Howto rebuild custom cache runing cron?