In the beginning was about metal, now is about Web: exploring WebAssembly in cloud envir.
summary
WASI gives WebAssembly network and file access and Go 1.21 ships Go 1.21 preview1 WASI support but the official toolchain cannot export Go functions yet; use the wazero runtime (pure Go) to embed modules and TinyGo exports to get callable functions. Passing strings requires manual pointer+length shims and only numeric params/one return are native. Kubernetes scheduler extensions prototype uses protobuf/grpc marshalling of large k8s objects and works but pays GC and copy costs.
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chapters (10)
- 0:00Introduction to WebAssembly
- 1:09WebAssembly System Interface
- 3:39Go 1.21 WASI support
- 8:55Extending apps with WASM plugins
- 19:45Memory and data exchange
- 24:41WebAssembly in cloud infrastructure
- 25:45Kubernetes scheduler extensions
- 30:46Changing APIs to fit WASM
- 34:27Current limitations and future
- 37:14Q&A
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