HAProxy

HAProxy
Original author(s) Willy Tarreau
Initial release December 16, 2001 (2001-12-16)
Stable release
1.8.13 / July 30, 2018 (2018-07-30)
Preview release
1.9-dev1 / August 2, 2018 (2018-08-02)
Repository
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Written in C
Operating system Linux, FreeBSD, OpenBSD, Solaris (8/9/10), AIX (5.1–5.3)
License GNU General Public License Version 2
Website www.haproxy.org

HAProxy is free, open source software that provides a high availability load balancer and proxy server for TCP and HTTP-based applications that spreads requests across multiple servers.[1] It is written in C[2] and has a reputation for being fast and efficient (in terms of processor and memory usage).[3]

HAProxy is used by a number of high-profile websites including GoDaddy, GitHub, Bitbucket,[4] Stack Overflow,[5] Reddit, Speedtest.net, Tumblr, Twitter[6][7] and Tuenti[8] and is used in the OpsWorks product from Amazon Web Services.[9]

History

HAProxy was written in 2000[10] by Willy Tarreau,[11] a core contributor to the Linux kernel,[12] who still maintains the project.

Performance

Servers equipped with a dual-core Opteron or Xeon processor generally achieve between 15000 and 40000 hits per second, and have no trouble saturating a 2 Gbit/sec connection under Linux.[13] Due to its widespread integration into enterprise-level infrastructures, monitoring HAProxy performance at scale has become an increasingly important issue. Monitoring end-to-end performance requires tracking metrics from frontends, backends, and HAProxy hosts themselves.[14] There are currently several tools available to track and monitor HAProxy performance, both open-source, like HATop as well as paid, like Datadog.

Similar software

See also

References

  1. ↑ "MySQL Load Balancing with HAProxy". Severalnines AB. 2011. Retrieved 19 February 2013.
  2. ↑ "HAProxy on Freecode". Retrieved 5 April 2013.
  3. ↑ "Nuts & Bolts: HAproxy". Retrieved 8 April 2013.
  4. ↑ "The inner guts of Bitbucket". Retrieved 26 February 2015.
  5. ↑ "What it takes to run Stack Overflow". Retrieved 22 November 2013.
  6. ↑ "HAProxy: they use it!". Retrieved 5 April 2013.
  7. ↑ "List of sites using HAProxy". Archived from the original on 10 June 2013. Retrieved 5 April 2013.
  8. ↑ "Tuenti+WebRTC (Voip2day 2014)".
  9. ↑ "HAProxy layer - AWS Opsworks". Retrieved 5 April 2013.
  10. ↑ "HAProxy: design choices and history". Retrieved 5 April 2013.
  11. ↑ "Willy Tarreau: About me". Retrieved 5 April 2013.
  12. ↑ "LKML: Willy Tarreau: [ANNOUNCE] Linux 2.4.37.11". Retrieved 5 April 2013.
  13. ↑ haproxy.1wt.eu#plat
  14. ↑ "Monitoring HAProxy Performance Metrics". Retrieved 17 Oct 2016.


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