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arch-patterns

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Recommends and analyzes system architecture patterns (Microservices, EDA, Serverless, etc.) based on requirements.

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/development/architecture-andreibesleaga-gabbe-12/SKILL.md

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Architecture Patterns Skill

Triggers

  • architecture
  • system design
  • scalability
  • microservices
  • event-driven
  • serverless

Purpose

To help the user or agent select the most appropriate system architecture based on improved Non-Functional Requirements (NFRs) like scalability, cost, maintainability, and latency.

Instructions

When designing a system or component:

  1. Analyze NFRs: Identify the key constraints.

    • High Scalability? -> Consider Microservices or Space-Based.
    • Complex Domain? -> Consider Domain-Driven Design (DDD) with Modular Monolith.
    • Real-time Data? -> Consider Event-Driven Architecture (EDA).
    • variable Workloads? -> Consider Serverless.

  2. Evaluate Patterns:

    • Layered (N-Tier): Standard for simple web apps. separation of concerns.
    • Modular Monolith: Best starting point for most startups. High cohesion, low deployment complexity.
    • Microservices: For large teams and distinct scaling needs. High operational complexity.
    • Event-Driven (EDA): For decoupled, reactive systems.
    • Space-Based: For extreme concurrency (in-memory data grids).
    • CQRS: For separate read/write scaling profiles.

  3. Recommend:

    • Propose 1-2 patterns.
    • Justify with "Pros vs Cons" relative to the specific project.
    • Use ARCH_DECISION_FRAMEWORK.md to document the choice.

Best Practices

  • Start Simple: Modular Monolith is often the best default.
  • Defer Complexity: Don't use Microservices until you have a specific problem they solve.
  • Evolutionary Arch: Design for change. Use "Fitness Functions" to measure architectural drift.