Replace wp-cron with system cron job

[jackjamieson2]

@dshanske suggested using a system cron job instead of wp-cron.
https://chat.indieweb.org/dev/2018-09-12/1536774813680400

GWG
You should try polling with cron
GWG
As opposed to wp cron

jackjamieson
Hmmm, any suggestions for references about doing that, or examples? I just did a quick google and it seems like result is referring to wp-cron

GWG
Well, look for disable wp cron and run it using a system cron job
GWG
But most people won't do that so you still need both

jackjamieson
I see - looking this up now

[dshanske]

It is for power users. Simple users won't know how to do this.

[jackjamieson2]

Yeah, I see what you mean. I'd like to prioritize ease of use as much as I can, so this will be a low priority.

Might think of some other ways to optimize the polling cron. Some brainstorming

• For sites that have low traffic, so might not trigger wp-cron, ensure that requests to the endpoint trigger a poll if it hasn't happened recently
• For sites that have a large number of feeds to poll, maybe split up the polling to make sure it does not monopolize server threads
• Websub could eliminate (or at least deeply reduce) the need for manual polling and would be more efficient overall

[dshanske]

This is just a documentation issue on how to do something many people do with their WordPress installations.