[wp-hackers] Can Multiple Simultaneous Cron Instances Be Called ?

[Otto]

In an extremely unlikely case, yes. There is a bit of a race condition
here. But it's tiny. The spawn_cron() function sets a transient called
doing_cron which it also checks for. Thus, if two hits launched at
almost the same moment, one of them will set the doing_cron transient
first, blocking the other one from continuing. The window for two to
run at once and both succeed is about as small as possible.

-Otto



On Mon, Dec 6, 2010 at 8:53 PM, Raj <lists at krusible.com> wrote:
> WordPress API's cron feature uses the website traffic to trigger scheduled
> tasks. Is it possible that multiple instances of cron be triggered
> simultaneously in a very high trafficked website because all the cron checks
> pass at the same time?
>
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