After a frustrating system design interview, I realized something: I knew the textbook answers, but couldn't explain WHY they worked.
So I built **SysBreak** — a free interactive simulator where your system breaks under traffic and you learn by fixing it.
DB slows → indexing
Server melts → load balancing
DB drowns → caching
Orders stuck → Kafka
Cascade failure → circuit breakers
5 min. Free. No signup.
https://zingy-sfogliatella-21d36...
It's an early POC. Honest feedback welcome!
