Cron Expression */3 * * * * Every 3 Minutes Meaning (2026)
Cron expression */3 * * * * means Every 3 minutes.
Cron expression */3 * * * * means every 3 minutes. This 2026 page explains interval behavior, overlap safeguards, and stable high-frequency scheduling patterns.
Cron Expression
Common use cases
- Short-interval polling and queue processing
- High-frequency metrics and availability checks
- Near-real-time cache or state refresh jobs
- Retry loops for latency-sensitive workflows
How to use this cron schedule
Cron expression `*/3 * * * *` every 3 minutes means the minute field advances in steps of three: 0, 3, 6, 9, and so on through each hour. If your search phrase is cron expression */3 * * * * every 3 minutes meaning, this expression is the exact pattern to use. In 2026, this cadence is common for near-real-time operational tasks that need faster feedback than five-minute schedules but should avoid the constant load of every-minute execution. It gives a practical balance of responsiveness and infrastructure efficiency.
Short intervals increase overlap risk, so runtime discipline is critical. If one execution can exceed three minutes under load, the next run can start before the previous one finishes and trigger duplicate side effects. Protect against this with idempotency keys, queue workers, or distributed locks. Validate third-party API quotas before shipping because three-minute polling can quickly exceed rate limits when traffic spikes. Keep each run focused on small, deterministic work and offload heavier processing to asynchronous consumers where possible.
For dependable 2026 operations, monitor job duration percentiles, success rate, and processed record counts from day one. Alert when failures repeat across multiple intervals, and watch for gradual runtime growth that indicates hidden bottlenecks. If cost climbs, split tasks by criticality: keep urgent checks on three-minute cadence and move non-critical work to five or ten minutes. This layered scheduling model preserves freshness while controlling spend and contention. Use this page as the exact copy reference for `*/3 * * * *` and related interval variants.
Want to customize this schedule?
Open it in the visual builder to tweak the expression interactively.
Open in BuilderNeed to monitor this cron job?
Cronhub tracks your scheduled jobs and alerts you if they fail or run late.
Platform usage examples
# Edit your crontab
crontab -e
# Add this line to run expression */3 * * * * every 3 minutes meaning (2026)
*/3 * * * * /usr/bin/php /var/www/html/script.php
# Or run a shell script
*/3 * * * * /home/user/scripts/job.sh >> /var/log/job.log 2>&1# .github/workflows/scheduled.yml
name: Scheduled Job
on:
schedule:
- cron: '*/3 * * * *'
jobs:
run:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Run job
run: echo "Running expression */3 * * * * every 3 minutes meaning (2026)"apiVersion: batch/v1
kind: CronJob
metadata:
name: my-scheduled-job
spec:
schedule: "*/3 * * * *"
jobTemplate:
spec:
template:
spec:
containers:
- name: job
image: my-image:latest
restartPolicy: OnFailureRelated developer tools
More free tools for engineering workflows that pair with scheduled jobs:
Frequently asked questions
What is the cron expression for expression */3 * * * * every 3 minutes meaning (2026)?
The cron expression is */3 * * * *. Cron expression */3 * * * * means every 3 minutes. This 2026 page explains interval behavior, overlap safeguards, and stable high-frequency scheduling patterns.
How do I schedule a cron job to run expression */3 * * * * every 3 minutes meaning (2026) in Linux?
Open your crontab with "crontab -e" and add a new line: */3 * * * * /path/to/your/script.sh — this schedules your script to run expression */3 * * * * every 3 minutes meaning (2026). Save and exit; the cron daemon picks up the change immediately.
What does the cron expression "*/3 * * * *" mean?
Cron expression */3 * * * * means every 3 minutes. This 2026 page explains interval behavior, overlap safeguards, and stable high-frequency scheduling patterns.
Can I use "*/3 * * * *" in GitHub Actions?
Yes. In your workflow YAML, set the schedule trigger: on: schedule: - cron: '*/3 * * * *'. GitHub Actions uses standard 5-field Unix cron syntax, so this expression works as-is.