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HAProxy vs NGINX Unit: What are the differences?
Developers describe HAProxy as "The Reliable, High Performance TCP/HTTP Load Balancer". HAProxy (High Availability Proxy) is a free, very fast and reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications. On the other hand, NGINX Unit is detailed as "A dynamic web and application server with Go, PHP, Python, Perl, and Ruby support". NGINX Unit is a dynamic web application server, designed to run applications in multiple languages. Unit is lightweight, polyglot, and dynamically configured via API. The design of the server allows reconfiguration of specific application parameters as needed by the engineering or operations.
HAProxy can be classified as a tool in the "Load Balancer / Reverse Proxy" category, while NGINX Unit is grouped under "Web Servers".
NGINX Unit is an open source tool with 1.98K GitHub stars and 141 GitHub forks. Here's a link to NGINX Unit's open source repository on GitHub.
Instagram, Dropbox, and Medium are some of the popular companies that use HAProxy, whereas NGINX Unit is used by inFeedo, Put.io, and Centra. HAProxy has a broader approval, being mentioned in 457 company stacks & 213 developers stacks; compared to NGINX Unit, which is listed in 11 company stacks and 8 developer stacks.
Pros of HAProxy
- Load balancer130
- High performance101
- Very fast69
- Proxying for tcp and http58
- SSL termination55
- Open source31
- Reliable27
- Free20
- Well-Documented18
- Very popular12
- Runs health checks on backends7
- Suited for very high traffic web sites7
- Scalable6
- Ready to Docker5
- Powers many world's most visited sites4
- Work with NTLM2
- Ssl offloading2
- Simple2
- Available as a plugin for OPNsense1
Pros of NGINX Unit
- PHP3
- Python2
- Golang2
- Multilang2
- Node.js1
- Ruby1
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Cons of HAProxy
- Becomes your single point of failure5