Exploring AWS Step Functions & API Gateway Integration with CDK - Episode 174
4In this video, I explore integrating AWS Step Functions with HTTP API Gateway using the AWS Cloud Development Kit (CDK). We troubleshoot issues with configuration, parameter mapping, and managing API requests and responses.
I start off tackling the quirks of using the Biome formatting tool in a workspace environment, including its inconsistent behavior and troubleshooting steps like reconfigurations and workspace adjustments. Once that is set aside, I transition into defining API Gateway routes and implementing Step Functions integration, focusing extensively on request parameter mappings, authorizers, and setting up preflight CORS policies.
Along the way, I dive into the nuances of working with API Gateway v2 and the differences between declarative and programmatic approaches to defining resources. I also discuss implicit permissions provided by CDK’s Level 2 and Level 3 constructs, the process of tying lambda functions to the API Gateway, and best practices for simplifying configurations and granting access within CDK environments.
By the end of the session, we discuss and partially implement the necessary routes and examine the advantages of using predefined external lambdas versus defining them within the same construct. Stay tuned to dive deeper as I explore how these infrastructure configurations play an essential role in backend development for scalable applications.
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