# The Effect Patterns Hub

A community-maintained collection of more than three hundred goal-oriented code patterns for the Effect-TS library, spanning error handling, concurrency, streams, schema, and testing, with a searchable command-line tool.

The Effect Patterns Hub is a knowledge base of practical patterns for building applications with Effect-TS, a TypeScript library for effectful, type-safe programming. Each pattern explains a specific technique, such as transforming values, recovering from errors, running effects in parallel, or retrying a failed operation, at a stated skill level, moving from core concepts toward more advanced architectural patterns.

Patterns are organized into sections covering error management, resource management, concurrency, streams, scheduling, domain modeling, schema, building APIs and HTTP requests, data pipelines, testing, observability, and tooling. A command-line tool installs alongside the repository to search, browse, and install individual patterns from the terminal, and the patterns are also published as machine-readable rules for AI coding assistants.

The project publishes its content automatically from source files, so the README itself is generated rather than hand-edited.

Website: https://effect-patterns.vercel.app