Scheduling & Queues Examples

Examples for schedules, time zones, queue assignment, global queues, and notifications.

Basic Scheduling

schedule: "5 4 * * *"  # Run at 04:05 daily
steps:
  - run: echo "Running scheduled job"

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Skip Redundant Runs

schedule: "0 */4 * * *"    # Every 4 hours
skip_if_successful: true     # Skip if already succeeded
steps:
  - id: extract
    run: echo "Extracting data"
  - id: transform
    run: echo "Transforming data"
    depends: extract

  - id: load
    run: echo "Loading data"
    depends: transform

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Queue Management

queue: "batch"        # Assign to global queue for concurrency control
steps:
  - run: echo "Processing data"

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Multiple Schedules

schedule:
  - "0 9 * * MON-FRI"   # Weekdays 9 AM
  - "0 14 * * SAT,SUN"  # Weekends 2 PM
steps:
  - run: echo "Run on multiple times"

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Timezone

schedule: "CRON_TZ=America/New_York 0 9 * * *"
steps:
  - run: echo "9AM New York"

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Start/Stop/Restart Windows

schedule:
  start: "0 8 * * *"     # Start 8 AM
  restart: "0 12 * * *"  # Restart noon
  stop: "0 18 * * *"     # Stop 6 PM
restart_wait_sec: 60
steps:
  - run: echo "Long-running service"

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Global Queue Configuration

# Global queue config in ~/.config/dagu/config.yaml
queues:
  enabled: true
  config:
    - name: "critical"
      max_concurrency: 5
    - name: "batch"
      max_concurrency: 1

# DAG file
queue: "critical"  # Assign to queue for concurrency control
steps:
  - run: echo "Processing critical task"

Configure queues globally and assign DAGs using the queue field.

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Email Notifications

mail_on:
  failure: true
  success: true
smtp:
  host: smtp.gmail.com
  port: "587"
  username: "${env.SMTP_USER}"
  password: "${env.SMTP_PASS}"
steps:
  - run: echo "Running critical job"
    mail_on_error: true

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