Compare HAProxy and NGINX performance with real-world insights. Find out which one handles traffic, load, and speed better for your setup.

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Choosing between HAProxy and NGINX for load balancing is critical for system reliability and performance. HAProxy is designed specifically for load balancing with an event-driven model, while NGINX evolved from a web server to include load balancing. HAProxy excels in connection management, higher connection concurrency, and memory efficiency under high loads, making it suitable for microservices and environments with unpredictable traffic spikes. NGINX performs better at lower concurrency levels, content delivery, and SSL processing. Detailed metrics, configuration strategies, and optimization guidelines are provided for both solutions to help in decision-making and performance tuning.

HAProxy vs NGINX Performance: A Comprehensive Analysis

This is a nice and detailed comparison. 🙂
Anton Putra also made a video about comparing the two (and also Traefik in the first one; he does different benchmarking scenarios on his channel):
<ul>
<li><a href="https://www.youtube.com/watch?v=h-ygQbBROXY" target="_blank" rel="noopener nofollow">https://www.youtube.com/watch?v=h-ygQbBROXY</a></li>
<li><a href="https://www.youtube.com/watch?v=o4gjiBetlZw" target="_blank" rel="noopener nofollow">https://www.youtube.com/watch?v=o4gjiBetlZw</a></li>
</ul>
The results are a lot more in favor of HAProxy than what the article suggests. Give it a go if you’re interested (6 and 9 minutes watch time respectively).