https://www.ganhammar.se Notes on serverless, .NET, and whatever I've just taken apart. en https://www.ganhammar.se/posts/building-a-centaur-chess-app-with-agentcore-runtime-and-strands-agents https://www.ganhammar.se/posts/building-a-centaur-chess-app-with-agentcore-runtime-and-strands-agents Fri, 27 Feb 2026 00:00:00 GMT In 1998, Garry Kasparov proposed a new format: human players paired with computer assistance. He called it "Advanced Chess," though the community settled... https://www.ganhammar.se/posts/blazingly-fast-serverless-note-app-part-1 https://www.ganhammar.se/posts/blazingly-fast-serverless-note-app-part-1 Thu, 27 Nov 2025 00:00:00 GMT I have already explored building native AOT Lambda functions for .NET 8, before the official runtime was announced, using Amazon Linux 2023 custom Lambda... https://www.ganhammar.se/posts/blazingly-fast-serverless-note-app-part-2 https://www.ganhammar.se/posts/blazingly-fast-serverless-note-app-part-2 Thu, 27 Nov 2025 00:00:00 GMT In part 1, we built the backend API with .NET 10 Native AOT on AWS Lambda, integrated Amazon Bedrock for AI-powered tag suggestions, and set up DynamoDB... https://www.ganhammar.se/posts/openiddict-on-aws-serverless-with-interactive-login https://www.ganhammar.se/posts/openiddict-on-aws-serverless-with-interactive-login Mon, 24 Feb 2025 00:00:00 GMT In a previous post, I described how OpenIddict, a flexible OAuth2/OIDC provider, can be deployed on AWS using only Serverless components such as AWS... https://www.ganhammar.se/posts/api-routing-using-cloudfront-function https://www.ganhammar.se/posts/api-routing-using-cloudfront-function Sun, 26 Jan 2025 00:00:00 GMT CloudFront is limited to 25 cache behaviors per distribution. The quota can be increased, but restrictions still apply, there is an upper limit to the... https://www.ganhammar.se/posts/lambda-at-edge-authorizer https://www.ganhammar.se/posts/lambda-at-edge-authorizer Mon, 19 Aug 2024 00:00:00 GMT With the relatively new addition of Origin Access Control (OAC) for Lambda Function URL origins, it is possible to connect a CloudFront distribution... https://www.ganhammar.se/posts/openiddict-on-aws-serverless-flexible-oauth2-oidc-provider https://www.ganhammar.se/posts/openiddict-on-aws-serverless-flexible-oauth2-oidc-provider Sun, 07 Apr 2024 00:00:00 GMT OpenIddict is a flexible OAuth2 and OpenID Connect server for ASP.NET Core. It's a great choice for building your own OAuth2/OIDC provider. In this post,... https://www.ganhammar.se/posts/fine-grained-authorization-with-amazon-cognito https://www.ganhammar.se/posts/fine-grained-authorization-with-amazon-cognito Wed, 27 Dec 2023 00:00:00 GMT As of a week ago, you can now modify the contents of the access token, making it possible to add fine-grained authorization decisions to your application... https://www.ganhammar.se/posts/delegation-tokens-with-amazon-cognito https://www.ganhammar.se/posts/delegation-tokens-with-amazon-cognito Sat, 23 Dec 2023 00:00:00 GMT The Delegation or On-Behalf-Of (OBO) flow is used when a service, often an API, needs to perform an action, often calling another API, on behalf of the... https://www.ganhammar.se/posts/dotnet-8-aot-aws-lambda https://www.ganhammar.se/posts/dotnet-8-aot-aws-lambda Thu, 12 Oct 2023 00:00:00 GMT The managed runtime for dotnet 8 is yet to be released, but, using Amazon Linux 2023 custom Lambda runtime, you can still run dotnet 8 projects. In this...