Spin 2.0, an upgrade to Fermyon’s framework for building WebAssembly (Wasm) applications for the cloud, has arrived, enabling Wasm component composition and laying a foundation for portability across runtimes and implementations.
Introduced November 2 and accessible from GitHub, Spin 2.0 is intended to improve both the developer experience and runtime performance. Featured is an updated spin.toml manifest that focuses on simplicity and on resources a component is allowed to access, such as a Redis database. When writing applications, developers can interact with built-in persistence, configuration, or data services from within Wasm components or communicate with external systems.