WebAssembly on Kubernetes
summary
Builds an HTTP mirror in Rust (axum + tokio) compiled three ways: native (baseline ~8 MB), embedded with a WASM runtime (~12 MB), and a from-scratch WASM image <300KB that actually opens a port via a custom runtime shim. Runs on minikube using containerd and a runtimeClass pointing at the WASMEdge runtime shim; only two lines of containerd config change. Demo works but toolchain stability is fragile — axum patches and runtimes needed downgrades.
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chapters (13)
- 0:00Intro
- 3:13WebAssembly in 2018
- 5:21WebAssembly in 2020
- 8:41WebAssembly now
- 10:50The many moving facets of WASM on k8s
- 12:25The demo points today
- 15:40Demo
- 24:13Just enough k8s intrinsics
- 26:42WASMedge
- 27:02Demo
- 34:52The good, the bad & the ugly
- 37:40Summary
- 38:45Outro
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