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A cron expression is a string of 5 fields that defines a recurring schedule: minute, hour, day-of-month, month, and day-of-week. Each field accepts values, wildcards (*), ranges (1-5), lists (1,3,5), and step values (*/15). Cron is used by Linux systems, CI/CD pipelines, cloud schedulers, and databases.
*/15 mean in a cron expression?The / character defines a step. */15 in the minute field means "every 15 minutes" (0, 15, 30, 45). 0-30/5 would mean "every 5 minutes, between minute 0 and 30." Step values are supported in all five fields.
Both control when a job runs by date. Day-of-month (1–31) targets a specific calendar date. Day-of-week (0–6, where 0 and 7 both equal Sunday) targets a specific weekday. If both are set (not *), most cron implementations run the job when either condition is true.
Use: */5 * * * 1-5. This runs every 5 minutes (minute field: */5), every hour (*), every day of the month (*), every month (*), but only Monday through Friday (1-5).
Our API lets you create, update, and monitor cron jobs programmatically. Get webhook callbacks on every execution, with logs and retry support built in.
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