Backend engineering
GraphQL API Design: REST의 한계에서 출발해 GraphQL을 도입하고 돌아온 여정
REST API의 Over-fetching, Under-fetching 문제를 해결하기 위해 GraphQL을 도입한 실전 경험. Schema 설계부터 N+1 해결까지 스토리텔링으로 풀어냅니다.
Event-Driven Architecture: 동기 지옥에서 벗어나 시스템을 변화시킨 여정
동기 방식의 한계를 넘어 Event-Driven Architecture를 도입한 실전 경험. Kafka, RabbitMQ 활용법과 설계 패턴을 스토리텔링으로 풀어냅니다.
Webhook Design Patterns: How I Built a System That Never Loses an Event
Learn reliable webhook patterns including retry strategies, idempotency, signature verification, and dead letter queues with production code examples.
Backend System Design Principles I Learned After Years of Production Failures
Core backend design principles: separation of concerns, statelessness, idempotency, and graceful degradation with real failure stories.
Database Design Patterns: How I Choose Between SQL and NoSQL for Every Project
A practical decision framework for choosing between SQL and NoSQL databases. Covers PostgreSQL, MongoDB, DynamoDB, and Redis with real-world tradeoffs.
Load Testing and Performance Optimization: How We Prepared Our Backend for 100K Concurrent Users
Load testing with k6, identifying bottlenecks like N+1 queries and connection pool exhaustion, and optimizing for high traffic.
Monolith to Microservices: My Real Migration Story and What I Would Do Differently
Practical guide to migrating from monolith to microservices with strangler fig pattern, domain boundaries, and real lessons.
CI/CD Pipeline Architecture: How Automating Deployments Eliminated Our Weekend Hotfixes
Design CI/CD pipelines from scratch with GitHub Actions. Covers build, test, deploy stages, blue-green deployments, canary releases, and infrastructure as code.
Building Observable Backend Systems: The Monitoring Setup That Catches Bugs Before Users Do
Build observable backend systems with structured logging, Prometheus metrics, and OpenTelemetry distributed tracing.
API Rate Limiting Design: What I Learned After a Traffic Spike Took Down Our Service
Design effective API rate limiting with token bucket, sliding window, and fixed window algorithms. Redis implementation included.
JWT Authentication Done Right: Security Mistakes I Made So You Don't Have To
Design secure JWT authentication with access/refresh tokens, httpOnly cookies, token revocation, and OAuth 2.0 integration.
Message Queue Architecture: Why I Switched from RabbitMQ to Kafka and When You Should Not
Compare RabbitMQ and Kafka for message queue architecture. Covers event-driven patterns, consumer groups, and dead letter queues.
Redis Caching Strategies That Cut My API Response Time by 90%
Practical Redis caching patterns: cache-aside, write-through, write-behind, TTL strategies, and cache invalidation with results.