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Whereas the words server and client may refer either to a computer or to a computer program, server-host and client-host always refer to computers. The host is a versatile, multifunction computer; clients and servers are just programs that run on a host. In the client–server model, a server is more likely to be devoted to the task of serving.
In some (non-polling) implementations of the publish-subscribe pattern, this is solved by creating a dedicated message queue server (and sometimes an extra message handler object) as an extra stage between the observer and the object being observed, thus decoupling the components. In these cases, the message queue server is accessed by the ...
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.
The most widespread use of multitier architecture is the three-tier architecture (for example, Cisco's Hierarchical internetworking model). N-tier application architecture provides a model by which developers can create flexible and reusable applications. By segregating an application into tiers, developers acquire the option of modifying or ...
HTTP functions as a request–response protocol in the client–server model. A web browser, for example, may be the client whereas a process, named web server, running on a computer hosting one or more websites may be the server. The client submits an HTTP request message to the server.
Python Yes Yes Pull No Yes Yes Yes Yes Mako No Yes No Tornado: Python See Advanced Async Example implements AJAX - - - - - - - - - - Yes TurboGears: Python Toolkit-independent, provides support via JSON Full stack, best-of-breed based Push Yes SQLAlchemy nose: SQLAlchemy-Migrate Repoze.what & Repoze.who pluggable: Genshi, more
Such environments may provide visual feedback of the state of versioned items and add repository commands to the menus of the development environment. Examples of this approach include AnkhSVN, and VisualSVN for use with Microsoft Visual Studio, and Eclipse Subversive [1] [2] for use with Eclipse Platform IDEs.
HTTPd is a software program that usually runs in the background, as a process, and plays the role of a server in a client–server model using the HTTP and/or HTTPS network protocol(s). The process waits for the incoming client requests and for each request it answers by replying with requested information, including the sending of the ...