Cron Expression for Every 15 Minutes
The cron expression */15 * * * * runs every 15 minutes. Perfect for regular monitoring, data synchronization, and frequent automated tasks.
Cron Expression
Format: minute hour day month weekday (e.g., "*/5 * * * *" for every 5 minutes)
About This Schedule
Expression: */15 * * * *
Frequency: Every 15 minutes, 24/7
Common Uses:
- Regular system health checks
- Data synchronization
- Cache updates
- Monitoring and alerting
Note: Moderate frequency suitable for most monitoring tasks.
Results
Enter a cron expression to see the results here.
Frequently Asked Questions
At what times does this cron expression run?
This expression runs at 0, 15, 30, and 45 minutes past every hour. That's 96 times per day, providing regular intervals without being too frequent.
How does this compare to running every 5 minutes?
Running every 15 minutes (96 times/day) is 3 times less frequent than every 5 minutes (288 times/day), reducing server load while still providing regular updates.
What's a good use case for 15-minute intervals?
This interval is perfect for monitoring tasks that don't need immediate detection, data syncs between systems, and regular cache updates that balance freshness with performance.
Practical Examples
Database Backup
Create incremental backups throughout the day for data protection.
API Data Sync
Synchronize data with external APIs at regular intervals.
Report Generation
Generate periodic reports for dashboard updates.
Common Issues & Solutions
If your tasks occasionally take longer than 15 minutes, use job locking to prevent concurrent executions that could cause conflicts.
Monitor execution times. If tasks consistently take 10+ minutes, consider moving to a less frequent schedule or optimizing the tasks.
For tasks that must complete before the next run, implement timeout mechanisms and alerting for long-running jobs.