🚀 Product Engineer Skill Tree Learning Guide

สำหรับเส้นทางการเป็น Product Builder ที่สร้างระบบใหญ่และทำเงินได้จริง

🔵 1. Foundation Engineering

Language Mastery – async/await, event loop, memory management, clean architecture
Git Workflow – branching strategy, conventional commits, pull request review
Docker – multi-stage build, volumes, networking, container vs VM
แนะนำศึกษา: Official Docs, YouTube "Docker deep dive", "Clean Architecture overview"

🟢 2. Backend & Data Mastery

REST API Design – pagination, filtering, versioning, rate limiting, JWT auth
MySQL Performance – indexing, composite index, EXPLAIN, slow query log
Caching – HTTP cache headers, CDN, Redis basics, cache invalidation
Search Systems – full-text search, inverted index, ElasticSearch concept
แนะนำศึกษา: "Designing Data-Intensive Applications", MySQL Docs, Redis Docs

🔴 3. Scalable System Design

System Bottleneck Analysis – CPU vs Memory vs IO vs Network
Scaling – vertical vs horizontal scaling, load balancer, stateless architecture
Database Scaling – read replica, replication, sharding basics
Queue Systems – message queue, background workers
Observability – logging, monitoring, metrics, error tracking
แนะนำศึกษา: "System Design Interview" (YouTube), High Scalability Blog

🟡 4. Product & Business Thinking

MVP Strategy – build vs iterate
Impact vs Effort Prioritization
Monetization Models – subscription, ads, freemium
User Retention – churn rate, engagement metrics
แนะนำศึกษา: Indie Hacker Podcast, Y Combinator Startup School

🟣 5. Ownership & Leverage

CI/CD – automated deploy pipeline
Infrastructure Basics – Nginx, reverse proxy, SSL, CDN
Automation – backup strategy, cron jobs
Deep Work – time blocking, weekly review system