Developer Documents Serverless Backend Build for Cloud Resume Challenge Week 2

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A developer completed the second phase of the Cloud Resume Challenge, building a serverless visitor counter backend using AWS Lambda, DynamoDB, and API Gateway. The system stores and increments a visitor count in a DynamoDB NoSQL table each time the resume page is loaded, returning the updated count to the frontend via a Python Lambda function. API Gateway exposes the Lambda function through a public HTTPS endpoint, while JavaScript on the resume page calls the API to display the count. The developer encountered several real-world bugs during the build, including an IAM AccessDeniedException, an AWS region mismatch between Lambda and DynamoDB, and a data type conflict that caused duplicate database entries. The post emphasizes the debugging process as the most instructive part of the project, offering detailed fixes for each issue encountered.

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