Alchemy Ships DDD Library for Effect: Commands, Aggregates and Events as Code
samgoodwin89 · x · 2026-10-27
samgoodwin89 released @alchemy.run/domain, bringing domain-driven design to Effect: Commands declare requests and all outcomes, Aggregates decide against state and emit Events, with Views/Projections/Policies for queries and side effects. The same model runs in-memory for tests and on Cloudflare Durable Objects in production (one ordered partition per key). A full deposit-money example shows commands, aggregates, and story()-based given/when/then tests. Context also notes all 2,850 AWS bindings now work from any cloud since beta.83.
Related event: Alchemy Brings Domain-Driven Design to the Effect Ecosystem(3 posts)→
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