What is HAProxy?
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.
HAProxy is a tool in the Load Balancer / Reverse Proxy category of a tech stack.
Who uses HAProxy?
Companies
688 companies reportedly use HAProxy in their tech stacks, including Instagram, Twitter, and LaunchDarkly.
Developers
1616 developers on StackShare have stated that they use HAProxy.
HAProxy Integrations
Datadog, Netdata, Honeycomb, Tutum, and Keepalived are some of the popular tools that integrate with HAProxy. Here's a list of all 14 tools that integrate with HAProxy.
Pros of HAProxy
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Decisions about HAProxy
Here are some stack decisions, common use cases and reviews by companies and developers who chose HAProxy in their tech stack.
Karkala Srikanth
We are looking to configure a load balancer with some admin UI. We are currently struggling to decide between NGINX, Traefik, HAProxy, and Envoy. We will use a load balancer in a containerized environment and the load balancer should flexible and easy to reload without changes in case containers are scaled up.
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HAProxy Alternatives & Comparisons
What are some alternatives to HAProxy?
NGINX
nginx [engine x] is an HTTP and reverse proxy server, as well as a mail proxy server, written by Igor Sysoev. According to Netcraft nginx served or proxied 30.46% of the top million busiest sites in Jan 2018.
Traefik
A modern HTTP reverse proxy and load balancer that makes deploying microservices easy. Traefik integrates with your existing infrastructure components and configures itself automatically and dynamically.
Envoy
Originally built at Lyft, Envoy is a high performance C++ distributed proxy designed for single services and applications, as well as a communication bus and “universal data plane” designed for large microservice “service mesh” architectures.
Squid
Squid reduces bandwidth and improves response times by caching and reusing frequently-requested web pages. Squid has extensive access controls and makes a great server accelerator. It runs on most available operating systems, including Windows and is licensed under the GNU GPL.
Varnish
Varnish Cache is a web application accelerator also known as a caching HTTP reverse proxy. You install it in front of any server that speaks HTTP and configure it to cache the contents. Varnish Cache is really, really fast. It typically speeds up delivery with a factor of 300 - 1000x, depending on your architecture.
