Download Mastering JXTA: Building Java Peer-to-Peer Applications by Joseph D. Gradecki PDF

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By Joseph D. Gradecki

A accomplished, code-intensive advisor to development commercial-quality peer-to-peer functions with JXTA and Java
hundreds of thousands of individuals use peer-to-peer (P2P) functions resembling KaZaA, AOL rapid Messenger, and Distributed.net. those functions harness the idle CPU cycles in their host desktops to supply huge, immense databases of data, construct strong processing engines, and let verbal exchange and file-sharing between clients around the globe. formerly, P2P functions were equipped utilizing proprietary applied sciences and protocols, forcing builders to begin from scratch whenever they write a brand new software. Now JXTA, an open resource, P2P improvement expertise, allows builders to construct P2P purposes utilizing Java, XML, and different standards.
With this precious ebook, Joseph Gradecki presents a realistic consultant to development peer-to-peer functions utilizing Java. He presents distinctive descriptions of the JXTA applied sciences and demonstrates the best way to construct real-world functions. This e-book additionally includes:
* particular descriptions of the JXTA specification and the Java reference implementation
* the whole P2P improvement method, together with how one can construct reusable software frameworks
* absolutely sensible instance functions, together with a dispensed computational engine which may make the most of the idle CPU energy of millions of distant machines to resolve complicated difficulties, and a fault-tolerant, encrypted community garage system
The spouse site includes:
* the entire code listings and entire functions from the book
* hyperlinks to extra JXTA and P2P assets

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SETI@home (which stands for Search for Extraterrestrial Intelligence) produced a client that works in much the same way. The client receives signal data from the SETI installation, Warnings 11 and applies an algorithm to the information. The results are sent back to a central server, and more data is retrieved for processing. 8 shows the transfer part of the system, which can be loosely called a peer-to-peer network. 8 A traffic example within SETI. Warnings While peer-to-peer systems offer great benefits in resource distribution, communication, and problem solving, developers and users alike should be aware of unresolved issues involved in using them.

Warnings While peer-to-peer systems offer great benefits in resource distribution, communication, and problem solving, developers and users alike should be aware of unresolved issues involved in using them. In this section, we briefly discuss four broad issues to raise your awareness level and spur your own conversations and research. Workplace Policies Recently, there was a case in which a university system administrator installed a distributed computational engine on some of the computers under his control.

This chapter will explore endpoints and present code for using them in peers. net using the JXTA framework. We examine the process of building a framework system, in which computationally complex algorithms can be distributed to peers on the networks that choose to subscribe. Chapter 20: Building an Encrypted, High-Availability Storage System Imagine building an encrypted remote storage service in which clients can sign up and store vital records. In this chapter, we build such a system, and explore topics such as using replication among peers and handling integration with backend databases.

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