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Building microservices with WebAssembly, Rust, and Spin - Radu Matei - Rust Linz May 2022
Discover WebAssembly microservices with true cross-platform capabilities. Learn about the component model and Spin's simplifications.
- The component model aims to standardize the execution of WebAssembly outside the browser, enabling scenarios like serverless platforms, scripting environments, and cross-language composition.
- Building microservices with Rust and WebAssembly allows for true cross-platform and cross-architecture capabilities.
- WebAssembly components can be used to make requests to external services, such as Redis, and return results to the client.
- Spin is a project that uses the WebAssembly component model to build a framework for microservices, with robust support for SDKs and simplified component configuration.
- The WebAssembly system interface (WASI) provides a way to access file systems, networking, and environment variables.
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Interfaces generated by
withbindgen can be used to consume or implement WebAssembly interfaces. -
The
spinCLI can be used to generate a new WebAssembly component and build it for production. - Finicky Whiskers is a manual load generator that demonstrates WebAssembly components and Spin in action.
- WebAssembly provides isolation between components and environments, ensuring that code from different projects does not interfere with each other.
- The WebAssembly component model enables composition of high-performance code from different languages, allowing for efficient and secure microservices.
- Spin has built-in support for handling Pub/Sub with Redis for every new request.
- The component model and Spin use Rust and the component model to build a framework for microservices with fast startup times and isolation.
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WebAssembly exports can be accessed using Rust’s
proc macroattributes. - Spin has excellent support for building microservices in Rust, with a simple way of defining components and configuring dependencies.