API Design for Product Managers: REST, GraphQL, and Beyond

API Design for Product Managers: What You Need to Know About REST, GraphQL, and Beyond

📚 Table of Contents The API That Broke a Partnership (And Cost $500K) What an API Actually Is (And Why You Should Care) REST vs. GraphQL vs. gRPC: The API Design Decision API Versioning: The Nightmare That Doesn’t Have to Be The Backward Compatibility Rule (And Why It Saves Projects) API Contracts: What They Are and Why You Need Them Documentation: The Difference Between “Good” and “Great” APIs Security Considerations for PMs Performance and What It Means for Users Common API Design Mistakes (And Their Business Impact) Questions to Ask Your Engineering Team Making API Decisions: A PM’s Framework The Bottom Line The API That Broke a Partnership (And Cost $500K) Let me tell you about a $500,000 mistake I witnessed. ...

📅 March 8, 2026 · ⏱️ 6 min · 👨‍💻 Karthick Sivaraj
Database Decisions for Product Managers: SQL, NoSQL, and When to Use What

Database Decisions for Product Managers: SQL, NoSQL, and When to Use What

📚 Table of Contents The Migration That Nearly Killed the Company Why Database Decisions Are Strategic (Not Just Technical) SQL Databases: The Reliable Workhorse NoSQL Databases: The Flexible Alternative The Decision Framework: When to Use What Common Database Patterns for Product Managers The Hidden Costs of Database Choices Migration Risks: What Can Go Wrong Questions to Ask Your Engineering Team Your Database Decision Checklist The Bottom Line The Migration That Nearly Killed the Company In 2022, I watched a startup nearly die because of a database decision. ...

📅 December 20, 2025 · ⏱️ 4 min · 👨‍💻 Karthick Sivaraj