Cron Expression FAQ

Q: What is a cron expression?

A cron expression is a string consisting of five fields that define a schedule: minute, hour, day of month, month, and day of week.

Q: How do I run a job every day at midnight?

Use 0 0 * * *. This runs at 00:00 every day.

Q: What does */5 in the minute field mean?

*/5 means "every 5 minutes." So */5 * * * * runs every 5 minutes.