Suddenly, your heart rate spikes. Where do you even start? How many servers? What about databases? What happens if a video goes viral?
Then, the interviewer says: "Let's move to the next round. How would you design YouTube?" what is system design interview
You won't be writing code that compiles. There are no "for loops" or "if statements." Instead, you'll be drawing boxes (servers) and arrows (data flow) on a digital whiteboard while talking through trade-offs. Suddenly, your heart rate spikes