Creating scheduled events to invoke Lambda functions

You can create a scheduled event that invokes an AWS Lambda function by using an Amazon CloudWatch Event. You can configure a CloudWatch Event to use a cron expression to schedule when a Lambda function is invoked. For example, you can schedule a CloudWatch Event to invoke an AWS Lambda function every weekday. AWS Lambda is a compute service that enables you to run code without provisioning or managing servers.

Note: You can create Lambda functions in various programming languages. For this tutorial, the AWS Lambda function is implemented by using the AWS Lambda Java runtime API.

In this tutorial, you create a Lambda function by using the AWS Lambda Java runtime API. This example invokes different AWS services to perform a specific use case. For example, assume that an organization sends a mobile text message to its employees that congratulates them at the one year anniversary date, as shown in this illustration.

This tutorial shows you how to use Java logic to create a solution that performs this use case. For example, you'll learn how to read an Amazon DynamoDB table to determine which employees have reached the one year anniversary date, how to process the data, and send out a text message all by using an AWS Lambda function. Then you’ll learn how to use a cron expression to invoke the AWS Lambda function every weekday.

To read this AWS tutorial, click https://github.com/awsdocs/aws-doc-sdk-examples/tree/master/javav2/usecases/creating_scheduled_events.

I work on AWS Java code that helps AWS developers. Included in this role is working with AWS Services such as S3, DynamoDB, EC2, Lambda functions, and so on. 

https://www.linkedin.com/in/scottmacdonald2010/