How to setup Lambda Function URLs with Server-Sent Events (SSE) Streaming

Setup Lambda Function URL Create a new Lambda function in your AWS infrastructure using Terraform with the following configurations: Enable Function URL with Authentication set to NONE Set invoke mode to RESPONSE_STREAM for SSE support Configure Content Security Policy (CSP) in your infrastructure to allow the Lambda Function URL: Add the Lambda Function URL to the connect-src directive in your CSP configuration Update CSP settings dynamically through Terraform for each environment Set up CI/CD pipeline using GitHub Actions: Create deployment workflows for the Lambda function Configure environment-specific variables and settings Configure additional security measures: Implement AWS WAF for enhanced security Set up appropriate concurrency limits for the Lambda function Usage After setup, the Lambda Function URL can be used to establish SSE streaming connections. Ensure that: Your application's CSP is properly configured to allow connections to the Lambda Function URL The health endpoint returns a 200 status code when tested Web adapter initialization is properly configured with required environment variables