Skill UI

A comprehensive, production-grade reference architecture for integrating with Apollo.io. It details a layered design encompassing API services, business logic, background job processing (e.g., lead enrichment), and data modeling, enabling the building of robust sales intelligence and CRM synchronization systems.

This skill guides the architectural definition of complex business domains using Domain-Driven Design (DDD). It helps in defining core subdomains, separating services by bounded contexts, and establishing a unified ubiquitous language. It is essential for decomposing monoliths, structuring microservices, and aligning team ownership with clear domain boundaries.

Mastery of advanced system design patterns, including Event Sourcing, CQRS, and Event-Driven Architecture (EDA). This skill covers designing event stores, building read/write projections, orchestrating sagas, and managing eventual consistency. It is ideal for building complex microservices that require guaranteed audit trails, historical state querying (temporal queries), and robust handling of business workflows with compensating actions.

This skill provides patterns and implementation templates for managing complex, long-running business processes across multiple independent services. It focuses on implementing the Saga pattern, ensuring data consistency in microservices architectures. It defines clear states, handles step execution, and crucially includes compensation logic to reliably roll back changes when any part of the workflow fails.

This comprehensive guide details how to establish secure and robust API endpoints using Expo Router and EAS Hosting. Learn best practices for handling server-side secrets (API keys, credentials), proxying third-party services (like OpenAI), executing secure database operations, and implementing complex business logic entirely on the server. It covers file structure, HTTP methods, and deployment to Cloudflare Workers.

A guide to building robust, type-safe, and highly testable backend services using functional programming patterns in Node.js or Deno. This pattern utilizes fp-ts and ReaderTaskEither to manage dependency injection, compose complex business logic, and handle typed errors gracefully, promoting clean service layer architecture.

This guide details the Hexagonal Architecture (Ports and Adapters) pattern, a robust method for decoupling core business logic from external infrastructure concerns. It teaches how to structure applications to make the domain model independent of databases, UI frameworks, or message queues. Implementing this pattern drastically improves testability, maintainability, and the ability to swap out external services without rewriting business rules.

A comprehensive reference architecture for building robust and scalable supply chain integrations with Flexport's logistics API. It outlines a structured pipeline using Ingest (webhooks/polling), Core (business logic services), and Expose (REST API/Dashboard layers), ensuring reliable data flow, caching, and queueing best practices.

This comprehensive guide outlines best practices for designing and organizing robust backend APIs within the Webiny framework. It details core architectural patterns, including singleton Services (for external APIs or cohesive domain logic), transient UseCases (single-method business orchestrators), and Repository patterns for persistence. Use this skill to structure features, manage dependencies, and ensure scalable, maintainable backend code.

This catalog provides core abstractions for implementing event-driven architectures (EDA). It includes `DomainEvent`, the base class for all business domain events, and `EventPublisher`, the mechanism used to publish these events to registered handlers. Use these components to effectively decouple services and build robust, reactive systems.

A comprehensive guide on extending and customizing GraphQL APIs using the GraphQLSchemaFactory pattern. Learn how to add custom queries and mutations, define type definitions, and implement complex resolvers with per-request dependency injection (DI). Ideal for developers needing to inject backend services, use cases, and sophisticated business logic into their existing GraphQL schema.

This guide details the Hexagonal Architecture (Ports and Adapters) pattern, a robust method for decoupling core business logic from external infrastructure concerns. It teaches how to structure applications to make the domain model independent of databases, UI frameworks, or message queues. Implementing this pattern drastically improves testability, maintainability, and the ability to swap out external services without rewriting business rules.