An introduction to WebAssembly components
summary
WebAssembly components let code from different languages become one deployable unit: the demo composes Rust and .NET pieces into a single WASM using cargo component build and wasmtime and runs it via spin and a spin Cloud deploy plugin. The runtime loads modules on demand, enabling 3,500 spin apps on a single node in experiments and near-instant handlers with wasi HTTP. Tooling shown includes wasmtime, wasi, spin, spin Cube and cargo component; example sizes range (Rust very small, ASP.NET components around 17 MB), and cross-language composition is demonstrated: compose Rust and .NET components into one WASM.
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chapters (17)
- 0:00Welcome
- 2:08Problem WebAssembly solves
- 5:16WebAssembly timeline
- 7:44WebAssembly components
- 10:35Rust module in WASM
- 15:55WASI explained
- 17:42Spin framework
- 23:01Spin HTTP handler
- 25:27Performance benefits
- 26:51Firon Cloud runtime
- 29:24WebAssembly and .NET
- 35:26Cross-language composition
- 38:35Demo component composition
- 41:48Components in .NET
- 48:29Spin's WIT interfaces
- 51:39WASM platforms vision
- 57:18Q&A
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