FASTLY-COMPUTE-EDGE

Fastly Wasmtime Wasm serverless edge.

Definition

Fastly Compute@Edge stack: Wasm runtime Wasmtime (Bytecode Alliance), supported languages Rust, AssemblyScript, JavaScript, Go (TinyGo), TypeScript. Performance: sub-microsecond cold start thanks to precompile WASI modules. Limits: ~50ms execution time, 128MB memory. Use cases: API gateway, dynamic personalization, A/B testing, image optimization, geo-routing. Pricing $35/month 1M requests start.

Origin

Fastly Compute@Edge announced Yamato Networks acquisition 2019 ; public preview launched November 2020 ; GA May 2021 ; ongoing Wasm development 2024.

Example in context

The New York Times uses Fastly Compute@Edge to personalize homepage ; ~50ms Wasm Rust execution to decide articles to display based on reader profile.

Related terms

• Cloudflare Workers — direct competitor.