But something interesting happened around 2020. The code started leaking. Not the code for YouTube or Twitter—the code for the answers . Suddenly, GitHub exploded with repositories titled "System-Design-Primer" or "Grokking-SDI-Notes." Engineers weren't just reading the course anymore; they were .
The GitHub repos have responded. The best forks now include sections—the dirty details the original paid course glossed over. grokking the system design interview github