Load Balancing: Check Yourself

What to Say in the Interview

The question this chapter answers: "You have put a load balancer in front of three servers. What breaks, and how do you know a server is healthy enough to send traffic to?"

Open by moving the state, not by pinning the user.

If an interviewer describes users losing their cart or getting logged out at random, the expected answer is sticky sessions, and the stronger answer is why you would rather not need them. Say: "Affinity works, but it makes the session die with the server holding it