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System Design2026-08-13

How Load Balancer works

AI-Expanded — inferred from the question title, not from the original candidate report

Design a simplified load balancer that distributes incoming client requests across a pool of backend servers using a round-robin algorithm. Explain how your implementation would handle server health checks and describe the mechanism for maintaining session persistence if a client requires multiple requests to be routed to the same backend instance.

Context & Summary

Personal Interview Round 3

💻 Coding practice works best on desktop.
Code editors are too cramped on mobile screens.