Caddy (web server)

Caddy (web server)

The Caddy <a href="/en/Web_server" title="Web server" class="wl">web server</a> is an <a href="/en/Extensibility" title="Extensibility" class="wl">extensible</a>,<a href="#cite_note-3" style="counter-reset: mw-Ref 3;">[3]</a> <a href="/en/Cross-platform_software" title="Cross-platform software" class="wl">cross-platform</a>,<a href="#cite_note-:0-4" style="counter-reset: mw-Ref 4;">[4]</a> <a href="/en/Open-source_software" title="Open-source software" class="wl">open-source</a><a href="#cite_note-5" style="counter-reset: mw-Ref 5;">[5]</a> <a href="/en/Web_server" title="Web server" class="wl">web server</a> written in <a href="/en/Go_(programming_language)" title="Go (programming language)" class="wl">Go</a>.<a href="#cite_note-6" style="counter-reset: mw-Ref 6;">[6]</a>

<div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none" about="#mwt1">Open source web server</div>
<style data-mw-deduplicate="TemplateStyles:r1066479718" typeof="mw:Extension/templatestyles mw:Transclusion">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}body.skin-minerva .mw-parser-output .infobox-header,body.skin-minerva .mw-parser-output .infobox-subheader,body.skin-minerva .mw-parser-output .infobox-above,body.skin-minerva .mw-parser-output .infobox-title,body.skin-minerva .mw-parser-output .infobox-image,body.skin-minerva .mw-parser-output .infobox-full-data,body.skin-minerva .mw-parser-output .infobox-below{text-align:center}</style><div class='mobile-collapse'><header class="mobile-collapse-header mobile-collapse-btn">Quick facts: Original author(s), Initial release, Stable r... ▼</header> <table class="infobox vevent mobile-collapse-element"><caption class="infobox-title summary">Caddy</caption><tbody><tr><td colspan="2" class="infobox-image logo"><a href="/en/File:Caddy_2_lock_icon_and_wordmark_logo.svg" class="mw-file-description image media-thumb" data-hash="File:Caddy_2_lock_icon_and_wordmark_logo.svg"><img loading="lazy" src="//upload.wikimedia.org/wikipedia/en/thumb/8/87/Caddy_2_lock_icon_and_wordmark_logo.svg/120px-Caddy_2_lock_icon_and_wordmark_logo.svg.png" decoding="async" data-file-width="512" data-file-height="154" data-file-type="drawing" height="36" width="120" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/87/Caddy_2_lock_icon_and_wordmark_logo.svg/180px-Caddy_2_lock_icon_and_wordmark_logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/87/Caddy_2_lock_icon_and_wordmark_logo.svg/240px-Caddy_2_lock_icon_and_wordmark_logo.svg.png 2x" alt="Caddy_2_lock_icon_and_wordmark_logo.svg"></a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/en/Programmer" title="Programmer" class="wl">Original author(s)</a></th><td class="infobox-data">Matthew Holt</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Initial release</th><td class="infobox-data">28&nbsp;April 2015; 7 years ago&nbsp;(2015-04-28)</td></tr><tr style="display: none;"><td colspan="2" class="infobox-full-data"></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/en/Software_release_life_cycle" title="Software release life cycle" class="wl">Stable release</a></th><td class="infobox-data"><div style="margin:0px;">2.6.4
 / 14&nbsp;February 2023; 36 days ago&nbsp;(2023-02-14)<a href="#cite_note-releases-1" style="counter-reset: mw-Ref 1;">[1]</a></div></td></tr><tr style="display:none"><td colspan="2">
</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/en/Repository_(version_control)" title="Repository (version control)" class="wl">Repository</a></th><td class="infobox-data"><a rel="mw:ExtLink nofollow" href="https://github.com/caddyserver/caddy" class="external text" target="_blank">github.com/caddyserver/caddy</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Written in</th><td class="infobox-data"><a href="/en/Go_(programming_language)" title="Go (programming language)" class="wl">Go</a><a href="#cite_note-Go1.6Blog-2" style="counter-reset: mw-Ref 2;">[2]</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/en/Operating_system" title="Operating system" class="wl">Operating system</a></th><td class="infobox-data"><a href="/en/BSD" title="BSD" class="mw-redirect wl">BSD variants</a>, <a href="/en/Linux" title="Linux" class="wl">Linux</a>, <a href="/en/Plan_9_from_Bell_Labs" title="Plan 9 from Bell Labs" class="wl">Plan 9</a>, <a href="/en/MacOS" title="MacOS" class="wl">macOS</a> and <a href="/en/Windows" title="Windows" class="mw-redirect wl">Windows</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/en/Computing_platform" title="Computing platform" class="wl">Platform</a></th><td class="infobox-data"><a href="/en/IA-32" title="IA-32" class="wl">IA-32</a> (i386), <a href="/en/X86-64" title="X86-64" class="wl">x86-64</a>, <a href="/en/ARM_architecture" title="ARM architecture" class="mw-redirect wl">ARM</a>, <a href="/en/MIPS_architecture" title="MIPS architecture" class="wl">MIPS</a>, <a href="/en/IBM_System/390" title="IBM System/390" class="wl">S390X</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/en/Software_categories#Categorization_approaches" title="Software categories" class="wl">Type</a></th><td class="infobox-data"><a href="/en/Web_server" title="Web server" class="wl">Web server</a>, <a href="/en/Proxy_server" title="Proxy server" class="wl">reverse proxy server</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/en/Software_license" title="Software license" class="wl">License</a></th><td class="infobox-data"><a href="/en/Apache_License" title="Apache License" class="wl">Apache 2</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Website</th><td class="infobox-data"><a rel="mw:ExtLink nofollow" href="https://caddyserver.com" class="external text" target="_blank">caddyserver.com</a> <a href="/en/Q24008327#P856" title="Edit this at Wikidata" class="image wl"><img loading="lazy"alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" data-file-width="20" data-file-height="20" data-file-type="drawing" height="10" width="10" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x"></a></td></tr></tbody></table> <footer class='mobile-collapse-footer mobile-collapse-btn'>Close ▲</footer></div>
The name "Caddy" refers both to a helper for tedious tasks, and a way to organize multiple parts into a simplified system.<a href="#cite_note-:1-7" style="counter-reset: mw-Ref 7;">[7]</a> At its core, Caddy is an extensible <a href="/en/Computing_platform" title="Computing platform" class="wl">platform</a> for deploying long-running services ("apps") using a single, unified configuration that can be updated on-line with a <a href="/en/Representational_state_transfer" title="Representational state transfer" class="wl">REST</a> <a href="/en/API" title="API" class="wl">API</a>.<a href="#cite_note-8" style="counter-reset: mw-Ref 8;">[8]</a> Official Caddy distributions ship with a set of standard modules which include <a href="/en/Hypertext_Transfer_Protocol" title="Hypertext Transfer Protocol" class="mw-redirect wl">HTTP</a> <a href="/en/Server_(computing)" title="Server (computing)" class="wl">server</a>, <a href="/en/Transport_Layer_Security" title="Transport Layer Security" class="wl">TLS</a> automation, and <a href="/en/Public_key_infrastructure" title="Public key infrastructure" class="wl">PKI</a> apps.<a href="#cite_note-:2-9" style="counter-reset: mw-Ref 9;">[9]</a> It is best known for its automatic HTTPS features.<a href="#cite_note-:8-10" style="counter-reset: mw-Ref 10;">[10]</a>

Matthew Holt initially began solo development on Caddy in 2014,<a href="#cite_note-:1-7" style="counter-reset: mw-Ref 7;">[7]</a> followed by the first public release in 2015.<a href="#cite_note-11" style="counter-reset: mw-Ref 11;">[11]</a><a href="#cite_note-12" style="counter-reset: mw-Ref 12;">[12]</a> The software soon became a public collaboration with hundreds of contributors on GitHub.<a href="#cite_note-13" style="counter-reset: mw-Ref 13;">[13]</a> To satisfy requirements from a growing community with a variety of <a href="/en/Use_case" title="Use case" class="wl">use cases</a>, eventually Caddy was completely rewritten from scratch, and a version 2.0 was released on May 4, 2020.<a href="#cite_note-14" style="counter-reset: mw-Ref 14;">[14]</a>

Caddy <a href="/en/Binary_file" title="Binary file" class="wl">binaries</a> are officially distributed for <a href="/en/Linux" title="Linux" class="wl">Linux</a>, <a href="/en/Microsoft_Windows" title="Microsoft Windows" class="wl">Windows</a>, <a href="/en/MacOS" title="MacOS" class="wl">macOS</a>, <a href="/en/Berkeley_Software_Distribution" title="Berkeley Software Distribution" class="wl">BSD</a>, and other <a href="/en/Operating_system" title="Operating system" class="wl">operating systems</a> on a variety of <a href="/en/Computer_architecture" title="Computer architecture" class="wl">architectures</a> including <a href="/en/X86-64" title="X86-64" class="wl">x86-64</a>, <a href="/en/ARM_architecture" title="ARM architecture" class="mw-redirect wl">ARM</a>, <a href="/en/MIPS_architecture" title="MIPS architecture" class="wl">MIPS</a>, <a href="/en/IBM_System/390" title="IBM System/390" class="wl">S390X</a>, and <a href="/en/Ppc64" title="Ppc64" class="wl">PPC64</a>.<a href="#cite_note-:3-15" style="counter-reset: mw-Ref 15;">[15]</a> Official distributions of <a href="/en/32-bit_computing" title="32-bit computing" class="wl">32-bit</a> binaries were discontinued, but Caddy can be <a href="/en/Compiler" title="Compiler" class="wl">compiled</a> from <a href="/en/Source_code" title="Source code" class="wl">source</a> for <a href="/en/IA-32" title="IA-32" class="wl">IA-32</a> architectures.<a href="#cite_note-16" style="counter-reset: mw-Ref 16;">[16]</a> Packages for <a href="/en/Debian" title="Debian" class="wl">Debian</a>, <a href="/en/CentOS" title="CentOS" class="wl">CentOS</a>, <a href="/en/Red_Hat_Enterprise_Linux" title="Red Hat Enterprise Linux" class="wl">RedHat</a>, and <a href="/en/Arch_Linux" title="Arch Linux" class="wl">Arch Linux</a> are also maintained,<a href="#cite_note-17" style="counter-reset: mw-Ref 17;">[17]</a> as well as an official <a href="/en/Docker_(software)" title="Docker (software)" class="wl">Docker</a> image.<a href="#cite_note-18" style="counter-reset: mw-Ref 18;">[18]</a>

The Caddy web server is an extensible, The name "Caddy" refers both to a helper for tedious tasks, and a way to organize multiple parts into a simplified system. Matthew Holt initially began solo development on Caddy in 2014, 