Lumen cron job is working intermittently

Hi everyone,

I am using Lumen 5.5 without mysql. I am using jessengers mongodb package. I am having odd issues with cron job. Sometimes some commands run on the schedule and sometimes they don't. My cron jobs are setup properly. I wonder where lumen stores when to trigger a cron job. Let's say I want to run a cron job every other hour how does Laravel know when was the last time job ran?

Any help on this will be greatly appreciated.

Thanks