Cron Not Running every iteration

This is something you might want to put in your help document for troubleshooting.

We had an issue where our cron was scheduled every 3 minutes, but emails in queue were only picked up every 3rd cycle. This only happened when we ran the command from cron (worked flawlessly from browser or even shell command line).

Turns out our WordPress host is EXTREMELY conservative in CACHING. So it was not running the command when cron called every time, instead it just returned cached results!!!

We fixed the issue by adding a variable to the end of the URL to hold current epoch timestamp.

Now every call is unique and it runs as expected.