Benchmarking Envoy Proxy, HAProxy, and NGINX Performance on Kubernetes

Benchmarking Envoy Proxy, HAProxy, and NGINX Performance on Kubernetes highlights the importance of measuring proxy latency in an elastic environment, which is critical for optimizing the end-user experience. The article explores how increasing amounts of traffic through a proxy introduces latency as it parses requests and routes them to destinations. Unlike throughput, latency cannot be improved by simply scaling out proxies, making it a material impact on business metrics. Three popular open-source L7 proxies - Envoy Proxy, HAProxy, and NGINX - are tested on Kubernetes, showcasing varying performance under different load conditions. The results show that Edge Stack/Envoy Proxy outperforms the others in terms of latency, with Ambassador Edge Stack performing well but not as consistently as Envoy Proxy. The study emphasizes the need for designing a real-world benchmark and test harness for reproducible workloads and encourages feedback from readers to improve performance tuning and scaling efforts.

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