EventBridge Overview

• EventBridge (formerly CloudWatch Events) enables you to connect applications using events. It allows you to create event buses to route events to different targets, including Lambda functions. EventBridge integrates with various AWS services and third-party apps, making it a central hub for event-driven architectures.

Scheduled Execution with EventBridge

• You can trigger Lambda functions on a schedule using EventBridge. It is akin to setting a cron job but with better integration and flexibility within AWS.

  Key Points:

  • Schedule Format: You can specify schedules using rate expressions (e.g., rate(5 minutes)) or cron expressions for more complex timing needs.
  • Lambda as Target: The Lambda function is set as the target of the event, and EventBridge will invoke it based on the defined schedule.

  Use Cases:

  • Automated Tasks: Running regular tasks like backups, sending periodic emails, or clearing temporary files.
  • Time-based Events: Triggering operations at specific times, such as monthly reports or daily monitoring scripts.

Key Benefits

• Highly Scalable: EventBridge scales automatically based on the volume of events.
• Easy Integration: No need to manage cron jobs or manually trigger Lambda functions—EventBridge takes care of this for you.

Example:

To trigger a Lambda function every hour, you would use an EventBridge rule with a cron expression like:

cron(0 * * * ? *)