How to Efficiently Use AWS Lambda and API Gateway for Scheduled API Integration

Learn how to create a scheduled trigger to retrieve and send data between APIs using AWS Lambda and API Gateway. This step-by-step guide ensures secure and cost-effective integration. --- This video is based on the question https://stackoverflow.com/q/75595695/ asked by the user 'Lars Hovden' ( https://stackoverflow.com/u/987332/ ) and on the answer https://stackoverflow.com/a/75595755/ provided by the user 'michail_w' ( https://stackoverflow.com/u/1426111/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Relay API Gets to an API Post Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- Streamlining API Integration with AWS Lambda and API Gateway In today's fast-paced digital landscape, integrating various APIs is vital for data flow and application efficiency. However, many developers face challenges when trying to connect multiple APIs—especially when they want to automate this process on a schedule. If you've found yourself in a similar predicament, you're not alone. This guide addresses a common scenario: how to set up a scheduled trigger to pull data from one API and post it to another using AWS Lambda and API Gateway. The Problem Imagine you have two distinct APIs that you need to interact with. You've successfully tested them using tools like Postman, but when it comes to orchestrating both APIs in the cloud, especially using AWS services, the process can feel overwhelming. You might encounter issues like access denial from your configured endpoints. So, how can you efficiently create a scheduled trigger for this task? Step-by-Step Solution 1. Write the Integration Code Your first task is to create the code that will handle the data transfer between your two APIs. This involves: Pulling data from the first API: Retrieve the necessary data you need. Sending data to the second API: Using the retrieved information, make a request to send it to the second API. Make sure you're familiar with the programming language supported by AWS Lambda (like Python, Node.js, or Java), as this will be the environment where you deploy your code. 2. Deploy as a Lambda Function Once your code is ready, the next step is to deploy it as an AWS Lambda function. Here’s why this matters: AWS Lambda Functionality: AWS Lambda allows you to run your code without provisioning or managing servers. This makes it perfect for different coding events like scheduled executions. Secured Configuration: By deploying your code in a Lambda function, you avoid exposing your code through any unnecessary API Gateway, thus ensuring better security. 3. Schedule Your Lambda Function To enable scheduled executions of your Lambda function, you'll use the AWS EventBridge Scheduler. Here’s how to go about it: Set up a new EventBridge rule to trigger your Lambda function at your desired schedule (e.g., daily, weekly). Ensure that the timing aligns with your data needs, whether you need it to run during off-peak hours or at specific intervals. Benefits of the AWS Lambda Approach By following the steps outlined above, you will enjoy various benefits: Automated Scheduling: The code runs automatically at the intervals you've defined, ensuring regular data transfer. Cost-Efficiency: Since you are not routing through an API Gateway, you’re minimizing extra costs that would arise from API Gateway usage. Enhanced Security: Your Lambda function remains secured by not being publicly accessible through an API. Conclusion Integrating APIs can be a complex task, but with the right AWS tools, it becomes more manageable. By using AWS Lambda for the execution of your code and EventBridge for scheduling, you can automate your API interactions securely and efficiently. So, take the plunge and start automating your API tasks today! This streamlined approach not only saves you time and money but also fortifies the security of your integrations. Ready to dive into AWS and simplify your API interactions? Let's get started!