#System Design

Uber's Smart Database Overload Fix

Uber evolved its database overload protection from static rate-limiting to an intelligent, priority-aware system called Cinnamon, enhancing stability and user experience.

58 Million Keys: The HashMap Freeze

A HashMap resize at 58.7 million keys triggered a 15-second freeze on LinkedIn's Feed platform due to kernel lock contention. Pre-allocation fixed it.

Arm Powers Agentic AI's System-Level Future

Beyond the Algorithm: The Hidden Hardware Hurdles in High-Performance Robotics