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Load Balancing, Resilience & Observability Trade-offs
System Design Trade-offs Analysis
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Round Robin load balancing is the simplest distribution algorithm. What is its critical limitation?
A
It creates persistent connections to each backend, consuming significant memory and file descriptors, making it unsuitable for environments with high connection churn rates
B
It relies on sequential IP resolution which introduces DNS lookup overhead on every rotation cycle, adding measurable latency at scale compared to weighted algorithms
C
It operates blindly without considering current server load or request complexity, potentially routing a heavy task to an already degraded server
D
It distributes requests evenly only when session affinity is disabled, causing sticky session data to be lost and forcing repeated user authentication across servers
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