Introducing Spin

Spin is a framework and CLI for building and running event-driven microservice applications with WebAssembly (Wasm) components. Spin uses Wasm because it is sandboxed, portable, and fast. Millisecond cold start times mean no need to keep applications “warm”.

Many languages have Wasm implementations, so developers don’t have to learn new languages or libraries. Spin is open source and built on standards, meaning you can take your Spin applications anywhere. There are Spin implementations for local development, for self-hosted servers, for Kubernetes, and for cloud-hosted services.

Starter Examples

sample

Checklist Sample App

A checklist app that persists data in a key value store

TypescriptHttpKv

template

Zola SSG Template

A template for using Zola framework to create a static webpage

rust

sample

AI-assisted News Summarizer

Read an RSS newsfeed and have AI summarize it for you

TypescriptJavascriptAi

Or dive into the documentation and get started:

• Take Spin for a spin
• Learn how to write Spin applications