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The Web Server Gateway Interface (WSGI, pronounced whiskey [1] [2] or WIZ-ghee [3]) is a simple calling convention for web servers to forward requests to web applications or frameworks written in the Python programming language.
Standalone HTTP Server; Web Server Gateway Interface (WSGI) is a modern approach written in the Python programming language. It is defined by PEP 3333 [10] and implemented via various methods like mod_wsgi (Apache module), Gunicorn web server (in between of Nginx & Scripts/Frameworks like Django), UWSGI, etc.
SCGI is a protocol which defines communication between a web server and an application server. This is in contrast to CGI, which is an earlier application (gateway) interface designed to let the application programmer avoid the complexity of sockets and long-running service processes when poor scalability and high overhead are acceptable.
The Asynchronous Server Gateway Interface (ASGI) is a calling convention for web servers to forward requests to asynchronous-capable Python frameworks, and applications. It is built as a successor to the Web Server Gateway Interface (WSGI).
JOnAS 5 – open source Java EE 5 application server; JOSSO 2 – Atricore's open source standards-based Identity and Access Management Platform; Liferay Dxp – open source and commercial enterprise Portal platform use OSGi from version 7.x; Lucee 5 – open source CFML Web Application Server; NetBeans – open source IDE and rich client platform
In the earlier days of the web, server-side scripting was almost exclusively performed by using a combination of C programs, Perl scripts, and shell scripts using the Common Gateway Interface (CGI). Those scripts were executed by the operating system, and the results were served back by the web server.
In 1993, the Common Gateway Interface (CGI) standard was introduced for interfacing external applications with web servers, to provide a dynamic web page that reflected user inputs. [3] Original implementations of the CGI interface typically had adverse effects on the server load however, because each request started a separate process. [4]
In order to be able to communicate with its internal modules and/or external programs, a web server program must have implemented one or more of the many available gateway interface(s) (see also Web Server Gateway Interfaces used for dynamic content). The three standard and historical gateway interfaces are the following ones. CGI