System Architecture Skill

PURPOSE

System design, scalability patterns, and distributed systems.

CORE COMPETENCIES

Patterns:
├── Monolith → Microservices
├── Event-Driven
├── CQRS / Event Sourcing
├── Saga Pattern
└── Circuit Breaker

Scalability:
├── Horizontal scaling
├── Database sharding
├── Caching layers
├── Load balancing
└── CDN

Reliability:
├── Fault tolerance
├── Disaster recovery
├── Chaos engineering
└── SLOs/SLIs

DESIGN PATTERNS

Microservices Communication

Sync:
├── REST/gRPC between services
├── Service discovery
└── Load balancing

Async:
├── Message queues (RabbitMQ, SQS)
├── Event streaming (Kafka)
└── Pub/Sub patterns

Database Patterns

Read Scaling:
├── Read replicas
├── Caching (Redis)
└── CDN for static

Write Scaling:
├── Sharding
├── Write-ahead log
└── Event sourcing

SYSTEM DESIGN TEMPLATE

1. Requirements clarification
2. Capacity estimation
3. High-level design
4. Detailed component design
5. Bottleneck identification
6. Scaling strategy

TROUBLESHOOTING