HAProxy Load Balancers
Used by Leading Companies
Pavlos Parissis, Senior Unix Systems Admin
“HAProxy Load Balancer is highly configurable, rock solid with excellent support and is faster than NGINX in our setup.”
“HAProxy is used heavily at Github and we couldn’t do a lot of what we do without it.”
– Matt at GitHub.
The GitHub Blog entitled “How We Made GitHub Fast”. It explains in depth how the GitHub architecture works, and there’s a lot to learn there for anyone who’s planning on starting a scalable site. Interestingly, a second article here gives a few more details as to why they’re not only using HAProxy but
Jeff Atwood, Co-Founder
“We’re big fans of HAProxy, which the guys at Reddit turned us on to. It has been working flawlessly for us in load balancing Stack Overflow between two – and now three – servers.”
This article gives some details on the Tumblr architecture that supports 500M page views a day, 40k requests/s with plans to go to 400k, and observes a 30% monthly growth. It involves more than 1000
Kevin Burke, Software Engineer
“HAProxy is a pretty magical piece of software that we use extensively at Twilio.”
Andrew Rodland, Backend Engineer
“The HAProxy maintainer, Willy Tarreau, was a real pleasure to work with. He recognized the value of the
Julia Evans, Software Engineer
“One of the important lessons we’ve taken away is that simple approaches are often the right ones. This system has been working for us reliably for more than a year without any incidents. Stripe doesn’t process anywhere near as many requests as Twitter or Facebook, but we do care a very great deal about extreme reliability.
As described in their architecture overview, Red Hat uses HAProxy as the load balancing solution in its cloud architecture OpenShift. While I know for sure they’re not the first cloud provider to use it, I can say that they’re the first one to openly admit it and that’s nice from them (their architecture overview is well detailed and worth a read BTW).
Igor Serebryany & Martin Rhoads
“The real work is performed by HAProxy, which is extremely stable and battle-tested…Using HAProxy gives us a whole host of advantages. We get all of the powerful logging and introspection. We get access to very advanced load-balancing algorithms, queueing controls, retries, and timeouts. There is built-in health checking which we can use to guard against network partitions (where we learn about an available backend from Nerve, but can’t actually talk to it because of the network). In fact, we could probably fill an entire additional blog post just raving about HAProxy and how we configure it.”
Airbnb built SmartStack on top of HAProxy. The article explains in
Taobao’s CDN is the world’s largest picture CDN, it delivers contents for all online shops hosted by Taobao and Alibaba, they represent around 80% of China’s online business. They use simple and scalable architecture including LVS + HAProxy for the load balancing layer, Squid for the cache and their fork of
Jason Yan, Co-Founder,CTO and David Cramer, Infrastucture Lead
Disqus chose HAProxy because it offers “high performance, intelligent server availability
An article on High Scalability gives some details about the architecture behind DISQUS and the traffic it has to deal with:. 17000 requests per second, 250 million visitors. They’re using HAProxy both in front of the web servers and in front of the database. See the detailed presentation.
Sachin Shetty, Cloud Architect
“HAProxy is a fantastic feature-rich load balancer and we at Egnyte have been using it for a while. Apart from using HAProxy for standard application load balancing, we are using HAProxy to overcome some limitations of Apache like use queue timeout to prevent backlogging in Apache when application servers are loaded. We also use HAProxy for load direction to route requests i.e. send requests to
Nicolas Brousse, Lead Operations Engineer,
“We use HAProxy in four different EC2 regions and five Availability Zones. It allows us to handle over 10 billion HTTP bid requests a day and deliver over six billion videos
Linux Kernel hosting infrastructure’s admin and architect, Konstantin Ryabitsev, shares his experience running one of the most challenging sites dedicated to development, and of course it runs behind HAProxy 🙂
Anthony Levesque, Sales & Marketing Director
“We know that using HAProxy allows us to build robust and scalable setups not only for our
Globo.Tech is a Hosting and Managed Service Provider, in Canada.
Brendan Sherar, CEO
“Biblio.com uses HAProxy to load balance and provide fault tolerance for 10 million searches per day across a cluster of Solr search servers that index 95 million bibliographic records of used and rare books. HAProxy has been very fast and rock solid for us. Thanks for providing it.”
Ricardo Bartolomé, Senior Ssystems Engineer
“Very robust and reliable, layer 7 load balancing. HAProxy was designed to be a load balancer.”
Spanish website with more than 12M users and 40 billion page
Daniel Lieberman, CEO
“We use HAProxy extensively, both as a standard edge load balancer and (especially in AWS) as a proxy for internal services, avoiding the need for IP-based failover.”
BitPusher designs, implements and manages infrastructures that are highly reliable, scalable and performant.
Olivier Warin, CEO
“A0 Labs is a French hosting company specialized in critical applications which need high performance and security. We have been using HAProxy for several years now and deploy it for our customers to provide high availability and performance to their
Free is a major player among the
Joseph Lynch, Technical Lead and Lawrence Matthews, Site Reliability Engineer
“Highly available, dynamic load balancing is a constantly changing infrastructure area….we decided to go with the simplest, most proven technology we could.”
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