It separates the coder from the engineer. It asks you to stop worrying about whether a function returns a string or an int , and start worrying about whether a billion people can wish their mother a "Happy Birthday" without crashing the planet.
You’ve aced the coding challenge. You reversed the linked list, found the duplicate in the array, and optimized the sorting algorithm. You feel invincible. what is system design interview
Then, the interviewer says: "Let's move to the next round. How would you design YouTube?" It separates the coder from the engineer
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. found the duplicate in the array