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Alternative PHP Cache
This is a list of PHP accelerators. Alternative PHP Cache (APC) Alternative PHP Cache is a free and open (PHP license) framework that caches the output of the PHP bytecode compiler in shared memory, thus reducing parsing and disk I/O overhead for later requests; and a shared memory cache for user data. For an application consisting of a large source code base such as Drupal, a 3x increase in page generation speed is possible as a result. It has been used at Facebook and has a mature codebase thanks to numerous contributors, including Facebook itself. APC was originally scheduled for inclusion into the PHP core no later than PHP 6. While multiple accelerator projects were considered desirable, the focus has since moved to Optimizer Plus, and, later, Zend Opcache that is included in the core distribution as of PHP 5.5. Since March 2013, a beta version of APCu (APC User Cache) is available, in which all opcode caching abilities have been removed to support user caches in shared m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PHP Accelerator
A PHP accelerator is a PHP extension designed to improve the performance of software applications written in the PHP programming language. Operation Most PHP accelerators work by caching the compiled opcode/bytecode of PHP representation of php files to avoid the overhead of parsing and compiling source code on each request (some or even most of which may never be executed). To further improve performance, the cached code is stored in shared memory and directly executed from there, minimizing the amount of slow disk reads and memory copying at runtime. Practical benefits PHP accelerators substantially increase the speed of PHP applications. Improvements of web page generation throughput by factors of two to seven have been observed. The effect on application performance of opcode caching varies widely, depending on factors such as the inherent execution time of the PHP application and the percentage of source code actually executed on a given request, and whether additional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighttpd
lighttpd (pronounced "lighty") is an open-source web server optimized for speed-critical environments while remaining standards-compliant, secure and flexible. It was originally written by Jan Kneschke as a proof-of-concept of the c10k problem โ how to handle 10,000 connections in parallel on one server, but has gained worldwide popularity. Its name is a portmanteau of "light" and ". Premise The low memory footprint (compared to other web servers), small central processing unit, CPU load and speed optimizations make lighttpd suitable for servers that are suffering load problems, or for serving static media separately from dynamic content. lighttpd is free and open-source software and is distributed under the BSD license. It runs natively on Unix-like operating systems, as well as Microsoft Windows. Application support lighttpd supports the FastCGI, SCGI and CGI interfaces to external programs, allowing web applications written in any programming language to be used with the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HipHop For PHP
HipHop for PHP (HPHPc) is a discontinued PHP transpiler created by Facebook. By using HPHPc as a source-to-source compiler, PHP code is translated into C++, compiled into a binary and run as an executable, as opposed to the PHP's usual execution path of PHP code being transformed into opcodes and interpreted. HPHPc consists mainly of C++, C and PHP source codes, and it is free and open-source software distributed under the PHP License. The original motivation behind HipHop was to save resources on Facebook servers, given the large PHP codebase of facebook.com. As the development of HipHop progressed, it was realised that HipHop could substantially increase the speed of PHP applications in general. Increases in web page generation throughput by factors of up to six have been observed over the Zend PHP. A stated goal of HPHPc was to provide a high level of compatibility for Zend PHP, where most Zend-based PHP programs run unmodified on HPHPc. HPHPc was originally open sourced i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zend Guard
Zend or Zand ( pal, ๐ญฆ๐ญญ๐ญฃ) is a Zoroastrian technical term for exegetical glosses, paraphrases, commentaries and translations of the Avesta's texts. The term ''zand'' is a contraction of the Avestan language word ' (, meaning "interpretation", or "as understood"). ''Zand'' glosses and commentaries exist in several languages, including in the Avestan language itself. These Avestan language exegeses sometimes accompany the original text being commented upon, but are more often elsewhere in the canon. An example of exegesis in the Avestan language itself includes ''Yasna'' 19โ21, which is a set of three Younger Avestan commentaries on the three Gathic Avestan 'high prayers' of ''Yasna'' 27. ''Zand'' also appear to have once existed in a variety of Middle Iranian languages, but of these Middle Iranian commentaries, the Middle Persian ''zand'' is the only to survive fully, and is for this reason regarded as 'the' ''zand''. With the notable exception of the ''Yashts'', almost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FastCGI
FastCGI is a binary protocol A communication protocol is a system of rules that allows two or more entities of a communications system to transmit information via any kind of variation of a physical quantity. The protocol defines the rules, syntax, semantics and synchroniza ... for interfacing interactive programs with a web server. It is a variation on the earlier Common Gateway Interface (CGI). FastCGI's main aim is to reduce the overhead related to interfacing between web server and CGI programs, allowing a server to handle more web page requests per unit of time. History Common Gateway Interface (CGI) is a protocol for interfacing external applications to web servers. CGI applications run in separate Process (computing), processes, which are created at the start of each request and torn down at the end. This "one new process per request" model makes CGI programs very simple to implement, but limits efficiency and scalability. At high loads, the operating system overhead fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet Information Services
Internet Information Services (IIS-pronounced 2S, formerly Internet Information Server) is an extensible web server software created by Microsoft for use with the Windows NT family. IIS supports HTTP, HTTP/2, HTTPS, FTP, FTPS, SMTP and NNTP. It has been an integral part of the Windows NT family since Windows NT 4.0, though it may be absent from some editions (e.g. Windows XP Home edition), and is not active by default. History The first Microsoft web server was a research project at the European Microsoft Windows NT Academic Centre (EMWAC), part of the University of Edinburgh in Scotland, and was distributed as freeware. However, since the EMWAC server was unable to handle the volume of traffic going to Microsoft.com, Microsoft was forced to develop its own web server, IIS. Almost every version of IIS was released either alongside or with a version of Microsoft Windows: * IIS 1.0 was initially released as a free add-on for Windows NT 3.51. * IIS 2.0 was included with Windo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BSD License
BSD licenses are a family of permissive free software licenses, imposing minimal restrictions on the use and distribution of covered software. This is in contrast to copyleft licenses, which have share-alike requirements. The original BSD license was used for its namesake, the Berkeley Software Distribution (BSD), a Unix-like operating system. The original version has since been revised, and its descendants are referred to as modified BSD licenses. BSD is both a license and a class of license (generally referred to as BSD-like). The modified BSD license (in wide use today) is very similar to the license originally used for the BSD version of Unix. The BSD license is a simple license that merely requires that all code retain the BSD license notice if redistributed in source code format, or reproduce the notice if redistributed in binary format. The BSD license (unlike some other licenses e.g. GPL) does not require that source code be distributed at all. Terms In addition t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High Availability
High availability (HA) is a characteristic of a system which aims to ensure an agreed level of operational performance, usually uptime, for a higher than normal period. Modernization has resulted in an increased reliance on these systems. For example, hospitals and data centers require high availability of their systems to perform routine daily activities. Availability refers to the ability of the user community to obtain a service or good, access the system, whether to submit new work, update or alter existing work, or collect the results of previous work. If a user cannot access the system, it is โ from the user's point of view โ ''unavailable''. Generally, the term ''downtime'' is used to refer to periods when a system is unavailable. Principles There are three principles of systems design in reliability engineering which can help achieve high availability. # Elimination of single points of failure. This means adding or building redundancy into the system so that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zend Server
{{Infobox software , title = Zend Server , name = Zend Server , logo = , logo caption = Zend Server , screenshot = , caption = , collapsible = , author = Zend Technologies , developer = Perforce , released = 2009 , discontinued = , latest release version = 2019.0.0 , latest release date = {{Start date and age, 2019, 07, 12, df=yes , latest preview version = , latest preview date = , programming language = PHP, C, C++, QT , operating system = Linux, Windows, MacOSX, IBMI, PowerPC , platform = Cross-platform , size = , language = Multilingual , language count = , language footnote = , genre = PHP Application Server , license = Proprietary , alexa = , website = {{URL, www.zend.com/en/products/server , standard = , AsOf = , logo_size = 238x33px , logo_alt = Zend Server , screenshot_size = , screenshot_alt = Zend Server is a complete and certified PHP distribution stack originally developed by Zend Technologies intended for high performance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GitHub
GitHub, Inc. () is an Internet hosting service for software development and version control using Git. It provides the distributed version control of Git plus access control, bug tracking, software feature requests, task management, continuous integration, and wikis for every project. Headquartered in California, it has been a subsidiary of Microsoft since 2018. It is commonly used to host open source software development projects. As of June 2022, GitHub reported having over 83 million developers and more than 200 million repositories, including at least 28 million public repositories. It is the largest source code host . History GitHub.com Development of the GitHub.com platform began on October 19, 2007. The site was launched in April 2008 by Tom Preston-Werner, Chris Wanstrath, P. J. Hyett and Scott Chacon after it had been made available for a few months prior as a beta release. GitHub has an annual keynote called GitHub Universe. Organizational ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MMCache
MMCache, also known as Turck MMCache, is a PHP accelerator, or an extension to PHP meant to improve performance. It is structured as a simple proxy server between the web server and the web browser. Its most important feature is using memcached for caching the data in memory. MMCache is free software released under the GNU GPL 2.0. The key identifying the given site is designated from the URL, so if, for example, there is a session defined within the URL, then the proxy will not work effectively. A newer version of MMCache, MMCache-LB, has an option to connect more web servers behind the proxy, with load balancing between them. Development work on MMCache was discontinued in 2009, and the code was forked into the eAccelerator application. See also * List of PHP accelerators * Web caching * Zend Performance Suite The Zend Engine is a compiler and runtime environment for the PHP scripting language and consists of the Zend Virtual Machine, which is composed of the Zend Compil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Free Software
Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, not price; all users are legally free to do what they want with their copies of a free software (including profiting from them) regardless of how much is paid to obtain the program.Selling Free Software (gnu.org) Computer programs are deemed "free" if they give end-users (not just the developer) ultimate control over the software and, subsequently, over their devices. The right to study and modify a computer program entails that |
