--- title: "Warming Up 100 AWS Lambda Hosted ASP.NET Web API Applications" url: https://daily.dev/posts/warming-up-100-aws-lambda-hosted-asp-net-web-api-applications-9klyzdvyt source_url: https://nodogmablog.bryanhogan.net/2022/11/warming-up-100-aws-lambda-hosted-asp-net-web-api-applications type: article source: "No Dogma Blog (Bryan Hogan)" published: 2026-05-31T07:47:26.072Z updated: 2026-05-31T08:46:28.603Z tags: [".net", "serverless", "aws-lambda", "aspnet"] reading_time: 5 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Warming Up 100 AWS Lambda Hosted ASP.NET Web API Applications **[No Dogma Blog \(Bryan Hogan\)](https://daily.dev/sources/bryanhogan)** · 5 min read · 0 upvotes · 0 comments ## Summary A practical guide to pre-warming multiple AWS Lambda execution environments for ASP.NET Web API applications to reduce cold starts. The technique involves adding a WarmupController that deliberately delays its first response by 10 seconds, forcing the Lambda service to spin up new execution environments for concurrent requests. A small .NET console app using HttpClient fires 100 parallel requests to the warmup endpoint, resulting in 100 pre-warmed execution environments ready before real traffic arrives. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Building Fast Serverless APIs With Minimal APIs on AWS Lambda](https://daily.dev/posts/building-fast-serverless-apis-with-minimal-apis-on-aws-lambda-7ewfzyfna) · Milan Jovanović · 4 upvotes · 0 comments --- Tags: [#.net](https://daily.dev/tags/.net), [#serverless](https://daily.dev/tags/serverless), [#aws-lambda](https://daily.dev/tags/aws-lambda), [#aspnet](https://daily.dev/tags/aspnet) [View this post on daily.dev](https://daily.dev/posts/warming-up-100-aws-lambda-hosted-asp-net-web-api-applications-9klyzdvyt)