WebAssembly at the IoT Edge

on YouTube ↗34m

" summary

Argues WebAssembly can let IoT firmware remain stable while shipping business logic as tiny, signed modules: a Rust pricing function compiles to wasm binary ~300 bytes and runs inside a host using Wasmtime runtime with a deny-by-default sandbox. Demonstration shows swapping pricing logic (off‑peak and happy‑hour discounts) by replacing the .wasm without firmware changes. Tradeoffs: actor images can reach ~1 MB, runtimes need heavy scrutiny (fuzzing, cargo vet, formal checks), and hosts must enforce strict IO and version tracking.

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" chapters (10)

1. 0:00Introduction
2. 1:09Edge computing challenges
3. 3:58Cloud computing challenges
4. 10:34What is WebAssembly
5. 15:28Motivating example
6. 20:25Distributing WebAssembly binaries
7. 22:13WebAssembly objections
8. 28:18Docker versus binaries
9. 29:40Summary and future
10. 30:42Q&A

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