client-server

<programming> A common form of distributed system in which software is split between server tasks and client tasks. A client sends requests to a server, according to some protocol, asking for information or action, and the server responds. This is analogous to a customer (client) who sends an order (request) on an order form to a supplier (server) who despatches the goods and an invoice (response). The order form and invoice are part of the "protocol" used to communicate in this case. There may be either one centralised server or several distributed ones. This model allows clients and servers to be placed independently on nodes in a network, possibly on different hardware and operating systems appropriate to their function, e.g. fast server/cheap client. Examples are the name-server/name-resolver relationship in DNS, the file-server/file-client relationship in NFS and the screen server/client application split in the {X Window System}. Usenet newsgroup: news:comp.client-server. ["The Essential Client/Server Survival Guide", 2nd edition, 1996]. (1998-01-25)

Client-server model is a distributed application structure that partitions tasks or workloads between the providers of a resource or service, called servers, and service requesters, called clients. Often clients and servers communicate over a computer network on separate hardware, but both client and server may reside in the same system.

client-server

In computing, a server is a piece of computer hardware or software (computer program) that provides functionality for other programs or devices, called "clients". This architecture is called the client–server model.

HTTP server

A web server is computer software and underlying hardware that accepts requests via HTTP (the network protocol created to distribute web content) or its secure variant HTTPS. A user agent, commonly a web browser or web crawler, initiates communication by making a request for a web page or other resource using HTTP, and the server responds with the content of that resource or an error message.

Messages Server is a component of OS X Server from Apple Inc. It was first introduced as iChat Server with the release of Mac OS X Server 10.

A name server refers to the server component of the Domain Name System (DNS), one of the two principal namespaces of the Internet. The most important function of DNS servers is the translation (resolution) of human-memorable domain names (example.

1. <software> A designer's or developer's suite of software that helps programmers isolate the {business logic} in their programs from the platform-related code. Application servers can handle all of the application logic and connectivity found in client-server applications. Many application servers also offer features such as transaction management, clustering and failover, and load balancing; nearly all offer ODBC support. Application servers range from small footprint, web-based processors for intelligent appliances or remote embedded devices, to complete environments for assembling, deploying, and maintaining scalable multi-tier applications across an enterprise. 2. <software> Production programs run on a mid-sized computer that handle all application operations between browser-based computers and an organisation's back-end business applications or databases. The application server works as a translator, allowing, for example, a customer with a browser to search an online retailer's database for pricing information. 3. <hardware> The device on which application server software runs. Application Service Providers offer commercial access to such devices. {Citrix Application Serving White Paper (http://citrix.com/press/corpinfo/application_serving_wp_0700.pdf)}. {Application Server Sites, a list maintained by Vayda & Herzum (http://componentfactory.org/links/appl.htm)}. {The Application Server Zone at DevX, (http://appserver-zone.com/default.asp)}. {TechMetrix Research's Application Server Directory, (http://techmetrix.com/trendmarkers/techmetrixasd.php3)}. (2001-03-30)