23.6. API Gateway Integration with AWS Lambda: Configuring Endpoints in API Gateway

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API Gateway integration with AWS Lambda: Configuring endpoints in API Gateway

Integrating API Gateway with AWS Lambda is a crucial technique for backend development in Python. The combination of these two technologies allows the creation of powerful and highly scalable serverless applications. In this article, we'll explore how to configure endpoints in API Gateway for successful integration with AWS Lambda.

What is API Gateway?

Amazon API Gateway is a fully managed service that makes it easy to develop, deploy, and maintain APIs at scale. It acts as a "front door" for applications that access data, business logic, or functionality from your backends, whether running on AWS Lambda, any web application, or on physical or virtual servers.

What is AWS Lambda?

AWS Lambda is a service that lets you run code without provisioning or managing servers. You only pay for the computing time you consume - there are no charges when your code is not running. With Lambda, you can run code for virtually any type of application or backend service, all without the need for administration.

Why integrate API Gateway with AWS Lambda?

Combining API Gateway with AWS Lambda allows you to securely build, run, and scale serverless applications. API Gateway manages all tasks involved in accepting and processing up to hundreds of thousands of simultaneous API calls, including data traffic, authorization and access control, monitoring, and API management.

Configuring endpoints in API Gateway

Configuring endpoints in API Gateway is an important process for successful integration with AWS Lambda. Here are the detailed steps to configure endpoints in API Gateway:

Step 1: Create a new resource

In the API Gateway console, in the list of APIs, choose the API you want to modify. In the resources panel, choose the root resource ('/'). Choose "Create Resource" from the Actions menu. Enter a name for the resource and a path label. Check the "Enable for CORS" box if your endpoint needs to support cross-origin requests.

Step 2: Create a new method

After creating the resource, choose it from the list of resources and choose "Create Method" from the Actions menu. Choose the type of HTTP method your endpoint should support (GET, POST, PUT, DELETE, etc.).

Step 3: Configure the method

In the method configuration, choose "Lambda Function" for the integration type. Make sure the "Use Lambda integration proxy" box is unchecked. Choose the region where your Lambda function is hosted and enter the Lambda function name. Choose "Save" to create and configure the method.

Step 4: Test the endpoint

After you configure the method, you can test the endpoint directly in the API Gateway console. Choose the method you just created, then choose "Test" from the Actions menu. Enter any query parameters or request body as needed and choose "Test."

Conclusion

Configuring endpoints in API Gateway for integration with AWS Lambda is a crucial process for developing serverless applications. With API Gateway and Lambda, you can build powerful, highly scalable applications without the need to manage servers. We hope this guide was helpful in understanding how to configure endpoints in API Gateway to integrate with AWS Lambda.

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9323.7. API Gateway integration with AWS Lambda: Implementing HTTP routes and methods in API Gateway