Apache HTTP Serverįirst released in 1995, Apache HTTP Server (also just known as ‘Apache’) is another very popular free, open source web server that, until very recently, powered more websites than any other web server-71% at its peak-before being overtaken by Nginx in April, 2019. World-known enterprise Nginx users include Dropbox, Netflix, and Zynga.
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(Link resides outside IBM). According to the internet research and cybercrime prevention company Netcraft (Link resides outside IBM), Nginx served or proxied nearly 38% of all the world’s websites and over 25% of the million busiest sites as of December, 2019. Commercial, supported versions of Nginx are also available, at Nginx, Inc. Nginx (Link resides outside IBM) is an open source web server that includes reverse proxy, load balancing, mail proxy, and HTTP cache capabilities. Instead, we thought it might be more valuable to list the most popular free, open source options available: Nginx The market is flooded with web servers and application servers-too many to list here. Open source web servers and application servers Most of the increasingly rich applications you use today feature a combination of static web content and dynamic application content, delivered via a combination of web server and application server technologies. The bottom line is that today’s most popular web servers and application servers are hybrids of both. To make matters more confusing, many web servers and some application servers are referred to, or refer to themselves, as web application servers. They also allow web applications to leverage services like reverse proxy, clustering, redundancy, and load balancing-services that improve performance and reliability and allow developers to focus less on infrastructure and more on coding. And an increasing number of application servers not only incorporate web server capabilities, but use HTTP as their primary protocol and support other protocols (e.g., CGI and CGI variants) for interfacing with web servers. Most web servers support plug-ins for scripting languages (e.g., ASP, JSP, PHP, Perl) that enable the web server to generate dynamic content based on server-side logic. In practice, however, the line between web servers and application servers has become fuzzier, particularly as the web browser has emerged as the application client of choice and as user expectations of web applications and web application performance have grown. The client for an application server can be the application’s own end-user UI, a web browser, or a mobile app, and the client-server interaction can occur via any number of communication protocols.
#Web file server software code
application server: What is the difference?īy strict definition, a web server is a common subset of an application server.Ī web server delivers static web content-e.g., HTML pages, files, images, video-primarily in response to hypertext transfer protocol (HTTP) requests from a web browser.Īn application server typically can deliver web content too, but its primary job is to enable interaction between end-user clients and server-side application code-the code representing what is often called business logic-to generate and deliver dynamic content, such as transaction results, decision support, or real-time analytics.
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Learn how web servers and application servers are different, how they’re the same, and how they combine to deliver most of the applications you use today.