THE WHATIS.COM WORD-OF-THE-DAY December 17, 2002 message-driven processing ______________ TODAY'S SPONSOR: NetIQ
FREE WEB ANALYTICS TRIAL Is Web analytics eating up valuable IT resources? Get your FREE TRIAL of the latest in Web analytics and see the new features for managing your Web site. WEBTRENDS REPORTING CENTER from NetIQ gives business users the Web analysis they need to make smarter decisions while reducing the strain on IT. Experience the New Features and Download a FREE TRIAL TODAY! http://WhatIs.com/r/0,,8497,00.htm?freetrial ______________ TODAY'S WORD: message-driven processing See our definition with hyperlinks at http://searchwebservices.techtarget.com/sDefinition/0,,sid26_gci763636,00.html Message-driven processing is an approach used within the client/server computing model in which a client (for example, your Web browser) sends a service request in the form of a specially-formatted message to a program that acts as a request broker, handling messages from many clients intended for many different server applications. A message may contain the name of the service (application) wanted and possibly a requested priority or time of forwarding. The request broker manages a queue of requests (and possibly replies) and screens the details of different kinds of clients and servers from each other. Both client and server need only understand the messaging interface. Message-driven processing is often used in distributed computing in a geographically-dispersed network and as a way to screen new client applications from having to interact directly with legacy server applications. Special software that provides message-driven processing is known as middleware. In IBM's MQSeries middleware messaging product, its MDp (for "message-driven processor") provides an example. MDp is an intermediary layer between clients and a legacy system of applications, and serves as a request broker between clients and applications. The client formulates a request; MDp (which retains information about which applications and databases are to be invoked and where they reside) then breaks the request down into work units and sends these out to the appropriate server applications and databases. After executing the tasks, the back-end processes return the results to MDp, which in turn formulates replies to return to either the requesting client or some other target destination. RELATED TERMS: client/server http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci211796,00.html queue http://whatis.techtarget.com/definition/0,,sid9_gci212852,00.html distributed computing http://searchwebservices.techtarget.com/sDefinition/0,,sid26_gci760724,00.html middleware http://searchwebservices.techtarget.com/sDefinition/0,,sid26_gci212571,00.html MQSeries http://searchwebservices.techtarget.com/sDefinition/0,,sid26_gci214524,00.html back-end http://searchdatabase.techtarget.com/sDefinition/0,,sid13_gci212161,00.html ______________________ SELECTED LINKS: The Middleware Resource Center provides more information. http://www.middleware.org/ _____________________ CROSSWORD PUZZLE #7 | Computer Basics Improve your flexible thinking skills. Print out the puzzle and keep it nearby to work on throughout your day! http://whatis.techtarget.com/definition/0,,sid9_gci865741,00.html ______________________ QUIZ #32 | Securing Your Network How much do you know about network security? Take our latest quiz and find out. >> Take the quiz http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci857673,00.html ______________________ REAL-LIFE CHALLENGE #20 | Is it ever a good idea to outsource IT? Is outsourcing the IT department under a contractual basis or a per-incident agreement ever a good way to cut costs? Nan, the Director of IT for a manufacturing company must decide. Can you advise? http://whatis.discussions.techtarget.com/WebX?[EMAIL PROTECTED]@.1dcfae0e/194 ______________________________ RECENT ADDITIONS AND UPDATES [1] NIC handle http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci867444,00.html [2] dumb network http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci867260,00.html [3] SoC testing http://whatis.techtarget.com/definition/0,,sid9_gci866453,00.html [4] single-system image http://search390.techtarget.com/sDefinition/0,,sid10_gci866451,00.html [5] automated test equipment http://searchcio.techtarget.com/sDefinition/0,,sid19_gci866407,00.html ____________________________________________________________________ ::::::::::::::::::: WHATIS.COM CONTACTS ::::::::::::::::::: LOWELL THING, Site Editor ([EMAIL PROTECTED]) ____________________________________________________________________ MARGARET ROUSE, Associate Editor ([EMAIL PROTECTED]) ___________________________________________________________________ :::::::::::::::::::: ABOUT THIS NEWSLETTER ::::::::::::::::::::: Published by TechTarget (http://www.techtarget.com) TechTarget - The Most Targeted IT Media Copyright 2002, All Rights Reserved. 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