Application Servers for E-Business by Lisa E. Lindgren

By Lisa E. Lindgren

The fashionable software server is a fancy platform that's the linchpin of an company setting that features a very wide selection of technologies-web rfile formatting, internet protocols, server-side scripts, servlets, applets, programming languages, disbursed item applied sciences, safeguard functions, listing and naming prone, load balancing, process administration, and others. As such, it may be a frightening activity to attempt to realize those platforms. software Servers for E-Business is helping you already know using program servers in e-business. The publication offers a complete evaluation of the applied sciences relating to program servers of their facilitation of E-business. those applied sciences contain CORBA, Java, company Java Beans, Java 2, net servers, and legacy structures. It explores the position those servers play within the smooth firm IT infrastructure and the surroundings during which they function. the cloth additionally contains implementation concerns for program servers, together with defense, scalability, load balancing, and fault tolerance.Chapter one offers an outline of program servers, the evolution of computing that took us from hierarchical, mainframe-centric environments to the net version of computing, and the reason for E-commerce and E-business. Chapters via 5 conceal particular applied sciences, from net browsers and servers to applets and servlets. bankruptcy 3 offers an summary of Java applied sciences, and bankruptcy 4 covers CORBA. bankruptcy 5 discusses software servers intimately. on account that software servers are more and more helping the most important mission-critical techniques of an firm, it really is serious that organisations deploying them construct in "enterprise-class" amenities for defense, scalability, load balancing, fault tolerance, and administration. bankruptcy six discusses those deployment layout matters. The publication concludes with bankruptcy seven, a bankruptcy that provides numerous examples of the benefits of program servers in huge organisations. It additionally offers case reports that illustrate the choice strategy, and an summary of seventeen program servers. The chapters are equipped in a simple demeanour, with part and subsections truly indicated so we can be simply skimmed. the great insurance provided during this e-book makes it a great reference for IT administration and employees accountable for specifying, designing, comparing, and imposing digital trade options.

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Once invoked, the script can access information from other servers, such as database servers, and it can interact with the user using forms. The script must build the Web page that responds to the user's request and pass that page back to the server to conclude the transaction. With CGI, the script can be written in any language (interpreted or compiled). There is a new instance of the CGI script created each time it is invoked, which can cause high system overhead if there are many users invoking the same script simultaneously.

Web application interface (WAI) applications can be written in C, C++, or Java. WAI applications run in their own process separate from the Web server. A unique aspect of WAI is that it is a CORBA-based interface and its use requires that Inprise's Visibroker be installed on the same server. The WAI application and the Web server communicate using CORBA protocols. Note: WAI is supported in current versions of the Netscape server but the server documentation clearly states that the interface may not be supported in future versions.

However, this benefit is only achieved if the browser itself does not become a bloated piece of software that is continually changing. For example, say a new multimedia file type is devised. In the absence of some other mechanism, the new multimedia file type could not be distributed and played until a sufficient number of Web browsers had been updated to recognize and play the new file type. Because a Web browser, like any other client software in a client/server environment, is installed on each system, the large automobile manufacturer's IT staff has the same problem it had before in distributing and maintaining new revisions of Web browser software.

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