Alchemy Framework: Encapsulating Services and Infrastructure with Layers
samgoodwin89 · x · 2026-09-02
Alchemy uses Layers to organize code components, allowing you to define service contracts and swap implementations (e.g., different cloud storage backends).
- Service Contract: Use Context.Service to define capability interfaces (e.g., JobService). Consumers use yield JobService to get a typed object.
- Implementation & Binding: Services are built via Layer.effect. A Layer can own its own infrastructure (like a KV Namespace) and permissions. This enables publishing services with bundled infrastructure to npm for reuse.
This pattern decouples logic from infrastructure.
Related event: Inside the Alchemy Framework: Bindings and Layers for Cloud Infra(2 posts)→
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