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Apache HTTP Server
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{{Technical|date=September 2010}}







factoids
|status = ActiveUnix-like, WindowsCOMPILING AND INSTALLINGWEBSITE=HTTPD.APACHE.ORGACCESSDATE=9 MAY 2016, C (programming language)>C,HTTPS://PROJECTS-OLD.APACHE.ORG/INDEXES/LANGUAGE.HTML >TITLE=ARCHIVED COPY DEADURL=YES ARCHIVEDATE=2016-03-02 XMLLANGUAGES, Apache HTTP Server, Ohloh, Black Duck Software,weblink 2 April 2014, |genre = Web server|license = Apache License 2.0}}The Apache HTTP Server, colloquially called Apache ({{IPAc-en|ə|ˈ|p|æ|tʃ|iː}} {{Respell|ə|PATCH|ee}}), is a free and open-source cross-platform web server, released under the terms of Apache License 2.0. Apache is developed and maintained by an open community of developers under the auspices of the Apache Software Foundation.The Apache HTTP Server is cross-platform; {{as of|2017|6|1|lc=y}} 92% of Apache HTTPS Server copies run on Linux distributions.WEB,weblink OS/Linux Distributions using Apache, 1 June 2017, Version 2.0 improved support for non-Unix operating systems such as Windows and OS/2.WEB,weblink Overview of new features in Apache 2.0, Apache 2.0 is faster and more stable on non-Unix platforms such as [..] OS/2, and Windows., Old versions of Apache were ported to run on OpenVMSWEB,weblink h41379.www4.hpe.com, HP OpenVMS systems - Secure Web Server (based on Apache), and NetWare.Originally based on the NCSA HTTPd server, development of Apache began in early 1995 after work on the NCSA code stalled. Apache played a key role in the initial growth of the World Wide Web,Netcraft Market Share for Top Servers Across All Domains August 1995 - today (monthly updated) quickly overtaking NCSA HTTPd as the dominant HTTP server, and has remained most popular since April 1996. In 2009, it became the first web server software to serve more than 100 million websites.WEB,weblink February 2009 Web Server Survey, Netcraft, 2009-03-29,weblink" title="web.archive.org/web/20090226092501weblink">weblinkarchives200021february_2009_web_server_survey.html, 26 February 2009, no, {{As of|2018|03}}, it was estimated to serve 43% of all active websites and 37% of the top million websites.WEB, March 2018 Web Server Survey, https:news.netcraft.com/archives/2018/03/27/march-2018-web-server-survey.html, Netcraft, Netcraft, 21 June 2018,

Name

According to the FAQ in the Apache project website, the name Apache was chosen out of respect to the Native American tribe Apache and their superior skills in warfare and strategy. The name was widely believed to be a pun on 'A Patchy Server' (since it was a set of software patches).WEB,weblink Why the name 'Apache'?, HTTPd Frequently Asked Questions, Official documentation used to give this explanation of the name,WEB, urlwww.apache.org/info.html, Information on the Apache HTTP Server Project, 1997-04-15, yes, https:web.archive.org/web/19970415054031weblink April 15, 1997, WEB, Apache Server Frequently Asked Questions,weblink 15 January 2017,weblink" title="web.archive.org/web/19970106233141weblink">weblink 1997-01-06, but in a 2000 interview, Brian Behlendorf, one of the creators of Apache, set the record straight:WEB,weblink Apache Power, Linux Magazine, When Apache is running, its process name is sometimes{{when|date=April 2018}} httpd, which is short for "HTTP daemon".

Feature overview

Apache supports a variety of features, many implemented as compiled modules which extend the core functionality. These can range from server-side programming language support to authentication schemes. Some common language interfaces support Perl, Python, Tcl and PHP. Popular authentication modules include mod_access, mod_auth, mod_digest, and mod_auth_digest, the successor to mod_digest. A sample of other features include Secure Sockets Layer and Transport Layer Security support (mod_ssl), a proxy module (mod_proxy), a URL rewriting module (mod_rewrite), custom log files (mod_log_config), and filtering support (mod_include and mod_ext_filter).Popular compression methods on Apache include the external extension module, mod_gzip, implemented to help with reduction of the size (weight) of Web pages served over HTTP. ModSecurity is an open source intrusion detection and prevention engine for Web applications. Apache logs can be analyzed through a Web browser using free scripts, such as AWStats/W3Perl or Visitors.Virtual hosting allows one Apache installation to serve many different Web sites. For example, one machine with one Apache installation could simultaneously serve www.example.com, www.example.org, test47.test-server.example.edu, etc.Apache features configurable error messages, DBMS-based authentication databases, and content negotiation. It is also supported by several graphical user interfaces (GUIs).It supports password authentication and digital certificate authentication. Because the source code is freely available, anyone can adapt the server for specific needs, and there is a large public library of Apache add-ons.WEB,weblink What is Apache Web Server? Webopedia, webopedia.com,

HTTP server and proxy features

{{prose|date=August 2016}}

Performance

Instead of implementing a single architecture, Apache provides a variety of MultiProcessing Modules (MPMs), which allow Apache to run in a process-based, hybrid (process and thread) or event-hybrid mode, to better match the demands of each particular infrastructure. This implies that the choice of correct MPM and the correct configuration is important. Where compromises in performance need to be made, the design of Apache is to reduce latency and increase throughput, relative to simply handling more requests, thus ensuring consistent and reliable processing of requests within reasonable time-frames.For delivery of static pages, Apache 2.2 series was considered significantly slower than nginx and varnish.WEB,weblink Serving static files: a comparison between Apache, Nginx, Varnish and G-WAN, Spoot!, To address this issue, the Apache developers created the Event MPM, which mixes the use of several processes and several threads per process in an asynchronous event-based loop.WEB,weblink worker - Apache HTTP Server Version 2.2, apache.org, This architecture, and the way it was implemented in the Apache 2.4 series, provides for performance equivalent or slightly better than event-based web servers, as is cited by Jim Jagielski and other independent sources.Apache httpd 2.4WEB,weblink Picking a Proxy Server, WEB,weblink Throughput evaluation of Apache 2.4.1, However, some independent, but significantly outdated, benchmarks show that it still is half as fast as nginx, e.g. WEB,weblink Performance of Apache 2.4 with the event MPM compared to Nginx, eschrade.com,

Licensing

The Apache HTTP Server codebase was relicensed to the Apache 2.0 License (from the previous 1.1 license) in January 2004,WEB,weblink Apache License, Version 2.0, The Apache Software Foundation, January 2004, 2013-05-21, and Apache HTTP Server 1.3.31 and 2.0.49 were the first releases using the new license.NEWSGROUP, FYI: Apache HTTP Server 2.0.49 Released, Burton, Richard Antony, alt.apache.configuration,weblink 2018-02-16, The OpenBSD project did not like the change and continued the use of pre-2.0 Apache versions, effectively forking Apache 1.3.x for its purposes.MAILING LIST,weblink The new apache license, de Raadt, Theo, Theo de Raadt, openbsd-misc, 18 February 2004, 2013-05-21, WEB,weblink Copyright Policy, OpenBSD, 2013-05-12, WEB,weblink apache-httpd-openbsd-1.3.20140502p2 – OpenBSD improved and secured version of Apache 1.3, OpenBSD ports, 2014-12-28, They initially replaced it with Nginx, and soon after made their own replacement, OpenBSD Httpd, based on the relayd project.WEB,weblink OpenBSD Upgrade Guide: 5.1 to 5.2, openbsd.org, WEB,weblink 2014-03-14, Heads Up: Apache Removed from Base, OpenBSD Journal, jj, WEB,weblink OpenBSD Upgrade Guide: 5.5 to 5.6, openbsd.org,

Versions

Version 1.1:The Apache License 1.1 was approved by the ASF in 2000: The primary change from the 1.0 license is in the 'advertising clause' (section 3 of the 1.0 license); derived products are no longer required to include attribution in their advertising materials, but only in their documentation.Version 2.0:The ASF adopted the Apache License 2.0 in January 2004. The stated goals of the license included making the license easier for non-ASF projects to use, improving compatibility with GPL-based software, allowing the license to be included by reference instead of listed in every file, clarifying the license on contributions, and requiring a patent license on contributions that necessarily infringe a contributor's own patents.

Development{|class"wikitable" style"float: right; margin-left: 1em;"

!Version!Initial release!Latest releaseo|1.3}}DATE=1998-06-06, 2015-01-06, WORK=APACHE.ORG, o|2.0}}DATE=2002-04-06, 2015-01-06, WORK=APACHE.ORG, o|2.2}}DATE=2005-12-01, 2015-01-06, WORK=APACHE.ORG, c|2.4}}DATE=2012-02-21, 2015-07-17, WORK=APACHE.ORG, {{Versionshow=011100}}The Apache HTTP Server Project is a collaborative software development effort aimed at creating a robust, commercial-grade, feature-rich and freely available source code implementation of an HTTP (Web) server. The project is jointly managed by a group of volunteers located around the world, using the Internet and the Web to communicate, plan, and develop the server and its related documentation. This project is part of the Apache Software Foundation. In addition, hundreds of users have contributed ideas, code, and documentation to the project.WEB,weblink About the Apache HTTP Server Project - The Apache HTTP Server Project, Documentation Group, apache.org, The Apache HTTP Server Open Source Project on Ohloh. (n.d.). Ohloh, the open source network. Retrieved November 12, 2012WEB,weblink Chapter 4. The Apache HTTP Server, fedoraproject.org, Apache 2.4 dropped support for BeOS, TPF and even older platforms.WEB,weblink Upgrading to 2.4 from 2.2, Platform support has been removed for BeOS, TPF, and even older platforms such as A/UX, Next, and Tandem. These were believed to be broken anyway.,

See also

References

{{Reflist|30em}}

External links

  • {{Official website}}
{{Apache}}{{Web server software}}{{Web interfaces}}{{Authority control}}

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