Benchmarking HTTP/3 Performance with Ambassador Edge Stack and Envoy Proxy

The article explores the performance of HTTP/3 compared to its predecessors HTTP/2 and HTTP/1.1 in a real-world benchmarking setup using Ambassador Edge Stack and Envoy Proxy. The testing involved measuring latency and round-trip times for three different websites with varying sizes and chattiness levels, served over two different hostnames configured for TLS v1.2 and v1.3, respectively. The results showed that HTTP/3 outperformed HTTP/1.1 across all site sizes, but its performance was closer to that of HTTP/2, especially when using TLS v1.3. However, in certain network conditions, HTTP/3 seemed to edge out HTTP/2. The study highlights the importance of considering specific use cases and network conditions when deciding between these protocols, and recommends experimenting with and deploying HTTP/3 support for forward-looking capabilities and handling potential geographic-specific degradation in networks.

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