Use scheduled events to invoke a Lambda function - Amazon EventBridge

Use scheduled events to invoke a Lambda function

The following code examples show how to create an AWS Lambda function invoked by an Amazon EventBridge scheduled event.

Java
SDK for Java 2.x

Shows how to create an Amazon EventBridge scheduled event that invokes an AWS Lambda function. Configure EventBridge to use a cron expression to schedule when the Lambda function is invoked. In this example, you create a Lambda function by using the Lambda Java runtime API. This example invokes different AWS services to perform a specific use case. This example demonstrates how to create an app that sends a mobile text message to your employees that congratulates them at the one year anniversary date.

For complete source code and instructions on how to set up and run, see the full example on GitHub.

Services used in this example

  • DynamoDB

  • EventBridge

  • Lambda

  • Amazon SNS

JavaScript
SDK for JavaScript (v3)

Shows how to create an Amazon EventBridge scheduled event that invokes an AWS Lambda function. Configure EventBridge to use a cron expression to schedule when the Lambda function is invoked. In this example, you create a Lambda function by using the Lambda JavaScript runtime API. This example invokes different AWS services to perform a specific use case. This example demonstrates how to create an app that sends a mobile text message to your employees that congratulates them at the one year anniversary date.

For complete source code and instructions on how to set up and run, see the full example on GitHub.

This example is also available in the AWS SDK for JavaScript v3 developer guide.

Services used in this example

  • DynamoDB

  • EventBridge

  • Lambda

  • Amazon SNS

Python
SDK for Python (Boto3)

This example shows how to register an AWS Lambda function as the target of a scheduled Amazon EventBridge event. The Lambda handler writes a friendly message and the full event data to Amazon CloudWatch Logs for later retrieval.

  • Deploys a Lambda function.

  • Creates an EventBridge scheduled event and makes the Lambda function the target.

  • Grants permission to let EventBridge invoke the Lambda function.

  • Prints the latest data from CloudWatch Logs to show the result of the scheduled invocations.

  • Cleans up all resources created during the demo.

This example is best viewed on GitHub. For complete source code and instructions on how to set up and run, see the full example on GitHub.

Services used in this example

  • CloudWatch Logs

  • EventBridge

  • Lambda

For a complete list of AWS SDK developer guides and code examples, see Using EventBridge with an AWS SDK. This topic also includes information about getting started and details about previous SDK versions.