Big Data Technology & Architecture

Jul 12, 2019 · Backend Development

Improving Nginx Load Balancing with the Virtual Node Smooth Weighted Round‑Robin (VNSWRR) Algorithm in Tengine

This article analyzes the shortcomings of Nginx's native Smooth Weighted Round‑Robin (SWRR) algorithm in large‑scale application gateway scenarios, presents a real‑world case where weight adjustments cause traffic spikes, and introduces the VNSWRR algorithm that achieves O(1) selection time, smoother weight handling, and up to 60% higher QPS performance.