Cron expression for every minute
Runs the job once a minute, all day, every day.
* * * * *
Every minute
Field by field
- Minute · 0–59
*every minute - Hour · 0–23
*every hour - Day of month · 1–31
*every day of the month - Month · 1–12 or JAN–DEC
*every month - Day of week · 0–7 or SUN–SAT
*every day of the week
Next runs in your local time
Where this cron expression shows up
- Health checks that need to catch a failure quickly
- Queue workers and lightweight pollers
- Smoke tests on an environment you can throw away
Common variations
-
Every 30 seconds (two entries, no seconds field)
*/1 * * * * Every minute
-
Every five minutes
*/5 * * * * Every 5 minutes
Ranges, steps, and names are spelled out on the cheat sheet.