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In software development, frontend refers to the presentation layer that users interact with, while backend involves the data management and processing behind the scenes. In the client–server model, the client is usually considered the frontend, handling user-facing tasks, and the server is the backend, managing data and logic.
Whether a computer is a client, a server, or both, is determined by the nature of the application that requires the service functions. For example, a single computer can run a web server and file server software at the same time to serve different data to clients making different kinds of requests.
A front-end web server serving static content, and potentially some cached dynamic content. In web-based application, front end is the content rendered by the browser. The content may be static or generated dynamically. A middle dynamic content processing and generation level application server (e.g., Symfony, Spring, ASP.NET, Django, Rails ...
Web server software allows computers to act as web servers. The first web servers supported only static files, such as HTML (and images), but now they commonly allow embedding of server side applications. Some web application frameworks include simple HTTP servers. For example the Django framework provides runserver, and PHP has a built-in ...
This is a very brief history of web server programs, so some information necessarily overlaps with the histories of the web browsers, the World Wide Web and the Internet; therefore, for the sake of clarity and understandability, some key historical information below reported may be similar to that found also in one or more of the above-mentioned history articles.
Google Web Toolkit: Java, JavaScript Yes Yes JPA with RequestFactory JUnit (too early), jsUnit (too difficult), Selenium (best) via Java Yes Bean Validation ZK: Java, ZUML jQuery: Yes Push-pull Yes any J2EE ORM framework JUnit, ZATS HibernateUtil, SpringUtil Spring Security Macro components & composition Yes client, server
For example, if files on a device are shared by some process, that process is a file server. Similarly, web server software can run on any capable computer, and so a laptop or a personal computer can host a web server. While request–response is the most common client-server design, there are others, such as the publish–subscribe pattern. In ...
A web application (or web app) is application software that is created with web technologies and runs via a web browser. [1] [2] Web applications emerged during the late 1990s and allowed for the server to dynamically build a response to the request, in contrast to static web pages. [3] Web applications are commonly distributed via a web server ...