Serverless on Thorsten Hans

Out Now: Building Serverless Applications with WebAssembly & Spin

Tue, 13 Oct 2026 08:45:00 +0200

Hey friends 👋🏼,

The wait is finally over! After countless early mornings, extensive refactorings, and hours spent obsessing over every code sample and diagram, the first version of Building Serverless Applications with WebAssembly & Spin is officially live.

You can grab your copy right now on Leanpub:

👉 https://leanpub.com/building-serverless-apps-with-wasm-and-spin

Building Serverless Applications with WebAssembly & Spin

What the Book Is About

Server-side WebAssembly represents the next major evolution in cloud architecture. By combining sub-millisecond cold starts, near-native performance, and robust sandboxed isolation, Wasm components eliminate the overhead of traditional containers and function-as-a-service platforms.

Let's build a serverless Christmas image tagging solution with Azure Computer Vision

Thu, 25 Nov 2021 15:06:37 +0000

By leveraging serverless capabilities provided by Azure, we can focus on actually building something instead of managing or taming the necessary infrastructure. Azure Computer Vision is one of those serverless capabilities you can use to build cool things rapidly.

Christmas 🎅🏼 is around the corner! That said, it’s time to gear up and flood social media with properly tagged images. To do so, we will build a simple serverless solution that tags all your Christmas images automatically.

Traffic split in Azure Container Apps

Thu, 04 Nov 2021 18:45:15 +0000

With Azure Container Apps (ACA), Microsofts latest serverless runtime for containerized workloads in Azure, we can customize certain aspects of traffic routing on the ingress level. This article will look at traffic split and configure a relatively simple API to leverage a tailored traffic split configuration in Azure Container Apps. If you are new to Azure Container Apps, consider reading my article “Introduction to Azure Container Apps” first.

What is traffic split

First, let’s quickly revisit what traffic split is. Traffic split is a mechanism that routes configurable percentages of incoming requests (traffic) to various downstream services. See the following picture, which shows the relation between ACA ingress controller, traffic split configuration, and downstream services (or revisions in the case of ACA):

Introduction to Azure Container Apps

Tue, 02 Nov 2021 23:36:24 +0000

During Ignite 2021, Microsoft announced the public preview of Azure Container Apps, a fully managed serverless container runtime for building and running modern applications at scale.

The announcement of #AzureContainerApps was definitely my personal highlight at #MSIgnite so far 🚀 pic.twitter.com/zbHaYotIWi
— Thorsten Hans 🦀 (@ThorstenHans) November 2, 2021

This article gives you a brief introduction to what Azure Container Apps is, which technologies are used to provide this fantastic serverless container runtime and how you can build and run containerized workloads on Azure Container Apps