Postgres Database, Data Types in Postgres , and The Write Penalty (2026)

BACKEND ARCHITECTURE MASTERY Day 8: Databases Part 1 - Postgres, orjson, and The Physics of Writes 15 min read Series: Logic & Legacy Day 8 / 30 Level: Intermediate/Senior 📍 Table of Contents (Click to Expand) 1. The Storage Divide: Disk vs. RAM 2. What Actually is a DBMS? 3. Why PostgreSQL Won the Internet 4. Postgres Data Types (Stop Using VARCHAR) 5. The Physics of Writes and The Write Penalty 6. Code: High-Concurrency Relational Logging 7. Alternatives: The NoSQL Ecosystem 8. Deep Diver