Building Event-Driven WebAssembly on Kubernetes: Runtime, Observability, and…
summary
Describes deploying WebAssembly workloads on Kubernetes using SpinKube and a Wasm runtime class (spin-v2), running ~150–200 randomized tests across six workload categories to evaluate performance. Reports millisecond cold starts (0.018s vs ~0.5s for Knative), similar steady-state performance, much smaller memory footprints (~6MB vs ~64MB) allowing ~170 vs ~16 instances per 1 GB RAM, uses eBPF for observability, and notes containers still beat Wasm on SIMD and memory‑intensive kernels; provides code and demo links.
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chapters (11)
- 0:00Introduction
- 2:33Event-driven on Kubernetes
- 9:00What is WebAssembly
- 13:58WebAssembly with SpinKube
- 18:14Benchmark setup
- 21:12Live benchmark demo
- 23:44Benchmark results
- 26:55When to avoid WebAssembly
- 28:21WebAssembly security
- 29:44WebAssembly adoption
- 30:25Q&A
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