Cron Expression for Every 3 Minutes
*/3 * * * *→Runs every 3 minutesQuick Examples
How It Works
*/3 * * * * uses a step in the minute field. It fires at minutes 0, 3, 6 … 57 of every hour. This is a middle ground between every-minute frequency and every 5 minutes.Common Use Cases
- 1Polling external APIs for status updates
- 2Near-real-time metrics with slightly lower load than every minute
Linux Crontab Example
*/3 * * * * /opt/scripts/poll.shAdd this line to your crontab with crontab -e
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More Every X Minutes
Runs every minute, 60 times per hour
* * * * *
Runs every 2 minutes, 30 times per hour
*/2 * * * *
Runs every 5 minutes, 12 times per hour
*/5 * * * *
Runs every 10 minutes, 6 times per hour
*/10 * * * *
Runs every 15 minutes, 4 times per hour
*/15 * * * *
Runs every 30 minutes, twice per hour
*/30 * * * *
Runs every 4 minutes
*/4 * * * *
Runs every 6 minutes
*/6 * * * *
Runs every 7 minutes
*/7 * * * *
Runs every 8 minutes
*/8 * * * *
Runs every 12 minutes
*/12 * * * *
Runs every 20 minutes
*/20 * * * *
Runs every 25 minutes
*/25 * * * *
Runs every 45 minutes
*/45 * * * *
Runs every 50 minutes
*/50 * * * *
Runs every 9 minutes
*/9 * * * *
Runs every 11 minutes
*/11 * * * *
Runs every 35 minutes
*/35 * * * *
Runs every 40 minutes
*/40 * * * *
Runs every 55 minutes
*/55 * * * *