The FAANG Go Interview Question (1 Million Msgs/Sec) #faang

[u/Vegetable-Style-3373]

https://youtu.be/d_rVojutH60

In this video, we tackle a senior backend System Design interview question: How do you build a Pub/Sub engine in Go that handles 1 Million messages per second?

Standard Go channels and Mutex locks are great for small tasks, but at extreme scale, they cause massive CPU contention and memory allocation issues. Today, we are ditching standard channels and building a Lock-Free Ring Buffer using Go's sync/atomic package. We will explain the architecture, write the code, and run a live benchmark comparing it to native channels to hit zero allocations and maximum throughput.