Guide to Reliable Internet Services and Applications

The Internet is a critical infrastructure supporting our information-based society. Our dependence on this infrastructure is similar to our dependence on the world's power grids and global transportation systems. Failures of the network infrastructure or

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The Computer Communications and Networks series is a range of textbooks, monographs and handbooks. It sets out to provide students, researchers and non-specialists alike with a sure grounding in current knowledge, together with comprehensible access to the latest developments in computer communications and networking. Emphasis is placed on clear and explanatory styles that support a tutorial approach, so that even the most complex of topics is presented in a lucid and intelligible manner.

Charles R. Kalmanek Y. Richard Yang



Sudip Misra

Editors

Guide to Reliable Internet Services and Applications

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Editors Charles R. Kalmanek AT&T Labs Research 180 Park Ave. Florham Park NJ 07932 USA [email protected]

Y. Richard Yang Yale University Dept. of Computer Science 51 Prospect St. New Haven CT 06511 USA [email protected]

Sudip Misra Indian Institute of Technology Kharagpur School of Information Technology Kharagpur-721302, India [email protected] Series Editor Professor A.J. Sammes, BSc, MPhil, PhD, FBCS, CEng Centre for Forensic Computing Cranfield University DCMT, Shrivenham Swindon SN6 8LA UK

ISSN 1617-7975 ISBN 978-1-84882-827-8 e-ISBN 978-1-84882-828-5 DOI 10.1007/978-1-84882-828-5 Springer London Dordrecht Heidelberg New York British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Library Library of Congress Control Number: 2010921296 c Springer-Verlag London Limited 2010  Apart from any fair dealing for the purposes of research or private study, or criticism or review, as permitted under the Copyright, Designs and Patents Act 1988, this publication may only be reproduced, stored or transmitted, in any form or by any means, with the prior permission in writing of the publishers, or in the case of reprographic reproduction in accordance with the terms of licenses issued by the Copyright Licensing Agency. Enquiries concerning reproduction outside those terms should be sent to the publishers. The use of registered names, trademarks, etc., in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant laws and regulations and therefore free for general use. The publisher makes no representation, express or implied, with regard to the accuracy of the information contained in this book and cannot accept any legal responsibility or liability for any errors or omissions that may be made. Cover design: SPi Publisher Services Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)

Foreword

An oft-repeated adage among telecommunication providers goes, “There are five things that matter: reliability, reliability, reliability, time to market, and cost. If you can’t do all five, at least do the first three.” Yet, designing and operating reliable networks and services is a Herculean task. Building truly reliable components is unacceptably expensive, forcing us to constr