[support] Cron and clearing caches to update field data..

[Wipe_Out]

On 2 October 2012 13:22, Earnie Boyd <earnie at users.sourceforge.net> wrote:

> On Tue, Oct 2, 2012 at 7:11 AM, Wipe_Out wrote:
> > Hi,
> >
> > Can someone explain what running the drupal cron job does and at what
> > intervals??
> >
>
> http://drupal.org/cron
>
> > Here is the situation.. We are updating a particular field directly in
> the
> > database from another source.. This is working fine but the issue is that
> > the updated information doesn't show on the site straight away..
> >
> > I have cron running every hour and have the cache lifetimes on the
> > performance page set to 10 min but even after waiting an hour and a cron
> run
> > the page still isn't always updated with the new value of the field..
> > Sometimes it is and sometimes it isn't..
> >
>
> Each module may have a cron hook implementation.  The cron.php process
> gets 240 seconds to execute those cron hook implementations.  If the
> 240 seconds time limit is exceeded then it is possible that some cron
> hook implementations do not execute or complete.  I tend to use a 5
> minute cycle and use Elysia Cron module to adjust which cron hook
> implementations run at various times.
>
> > The only way I have found to "force" an update is to clear all the caches
> > but this seems like a massive overkill..
> >
>
> May strictly be a timing issue.  I don't know but usually these
> effects for me tend to be related to my impatience or a lack of
> understanding in the flow.
>
> > If I can find out when it will update on its own I can set the user
> > expectations so they know they have to wait that long for the data to be
> > updated..
> >
>
> As explained above, you may be exceeding the 240 second cycle before
> the cron hook implementation executes.  The experience will be
> variable even with my suggestion of every 5 minutes and Elysia cron.
>
> > Thanks for any information..
>
> HTH.
>
> --
> Earnie
> -- https://sites.google.com/site/earnieboyd
> --
> [ Drupal support list | http://lists.drupal.org/ ]
>

Thanks Earnie.. That's useful..
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.drupal.org/pipermail/support/attachments/20121002/ac49219e/attachment.html