name: arch_patterns
router_kit: FullStackKit
description: Architecture patterns - monolith vs microservices, layered, event-driven, CQRS.
metadata:
skillport:
category: thinking
tags: [arch patterns, architecture, automation, best practices, clean code, coding, collaboration, compliance, debugging, design patterns, development, documentation, efficiency, git, optimization, productivity, programming, project management, quality assurance, refactoring, software engineering, standards, testing, utilities, version control, workflow] - arch-decisions

🏗️ Architecture Patterns

Sistem mimarisi pattern'ları.

⚠️ Bu Skill vs design-patterns

Kural: Backend/sistem → bu skill, Frontend/UI → design-patterns

⚖️ Monolith vs Microservices

Seç:
- Monolith: Küçük takım, MVP, hızlı iteration
- Microservices: Büyük takım, bağımsız deploy

📚 Layered Architecture

Presentation → Application → Domain → Infrastructure

⚡ Event-Driven

Producer → Event Broker → Consumer
           (Kafka/SQS)

📊 CQRS

Command Service → Write DB
                    ↓ Events
Query Service ← Read DB

🧩 Modular Monolith

Modules separated by boundaries within a single deployable unit.
Good for: Teams growing from startup to scale-up phase.
Prevents "Distributed Monolith" chaos.

Architecture Patterns v1.1 - Enhanced

🔄 Workflow

Kaynak: Software Architecture Guide

Aşama 1: Requirements Analysis

• [ ] Functional: Ne yapacak? (E-ticaret, Blog, IoT)
• [ ] Non-Functional: Scalability, Latency, Consistency ihtiyacı.
• [ ] Constraints: Takım boyutu, bütçe, timeline.

Aşama 2: Complexity Assesment

• [ ] Domain Complexity: Karmaşıksa -> DDD + Layered/Hexagonal.
• [ ] Scale Complexity: Yüksek trafik -> Event-Driven / Microservices.
• [ ] Data Complexity: Raporlama ağırsa -> CQRS.

Aşama 3: Pattern Selection

• [ ] Default: Modular Monolith ile başla.
• [ ] Scale-out: Bağımsız scale gereken modülleri ayır (Microservices).
• [ ] Real-time: Event-Driven ekle.

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