Keynote: What is a Component (and Why)?
Talkat WasmCon 2023 · on Wednesday, 2023-09-06· at 13:40· Grand Ballrooms A-D, Hyatt Regency Bellevue, 900 Bellevue Way NE·
summary
Proposal defines a WebAssembly “component” that bundles multiple Wasm modules with separate linear memories, typed imports/exports and resource handles, enabling low-overhead local calls and safe capability isolation. Demonstrated tools: wazivert for virtualizing filesystems, wasm compose and componentize.js/componentize.py/cargo-components for assembling and publishing, plus a registry-backed code-sharing cache. Targets preview 2 with Rust/JS/Python/Go/C support, filesystem/socket/HTTP proposals; preview 3 aims to add native futures/streams so handlers become composable async calls.
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chapters (13)
- 0:00Introduction
- 0:50What is WebAssembly
- 2:54WebAssembly use cases
- 9:49WebAssembly to components
- 12:13WebAssembly components
- 15:00Compositional modules
- 18:29Cross-language components
- 21:16Fine-grained sandboxing under the hood
- 23:44Execution model
- 25:30Portability and browsers
- 26:34Preview 2 goals
- 27:38Preview 3 improvements
- 29:06Conclusion
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