Oracle Coherence 3.5 - Seovic_ Aleksandar.pdf - Oracle Coherence 3.5 (3057) - superktos86

Oracle Coherence 3.5

Create Internet-scale applications using

Oracle's high-performance data grid

Aleksandar Seović

Mark Falco

Patrick Peralta

BIRMINGHAM - MUMBAI

Oracle Coherence 3.5

system, or transmitted in any form or by any means, without the prior written

permission of the publisher, except in the case of brief quotations embedded in

critical articles or reviews.

Every effort has been made in the preparation of this book to ensure the accuracy of

the information presented. However, the information contained in this book is sold

without warranty, either express or implied. Neither the authors, Packt Publishing,

nor its dealers or distributors will be held liable for any damages caused or alleged

to be caused directly or indirectly by this book.

Packt Publishing has endeavored to provide trademark information about all the

companies and products mentioned in this book by the appropriate use of capitals.

However, Packt Publishing cannot guarantee the accuracy of this information.

First published: April 2010

Production Reference: 1240310

Published by Packt Publishing Ltd.

32 Lincoln Road

Olton

Birmingham, B27 6PA, UK.

ISBN 978-1-847196-12-5

www.packtpub.com

Cover Image by Vinayak Chittar ( vinayak.chittar@gmail.com )

Credits

Authors

Aleksandar Seović

Editorial Team Leader

Mithun Sehgal

Mark Falco

Project Team Leader

Lata Basantani

Patrick Peralta

Reviewers

Rob Harrop

Project Coordinator

Srimoyee Ghoshal

Jimmy Nilsson

Patrick Peralta

Proofreader

Chris Smith

Steve Samuelson

Robert Varga

Graphics

Geetanjali Sawant

Acquisition Editor

James Lumsden

Production Coordinator

Shantanu Zagade

Development Editor

Dilip Venkatesh

Cover Work

Shantanu Zagade

Technical Editor

Arani Roy

Indexer

Rekha Nair

Foreword

There are a few timeless truths of software development that are near-universally

accepted, and have become the basis for many a witty saying over the years. For

starters, there's Zymurgy's First Law of Evolving Systems Dynamics, which states:

Once you open a can of worms, the only way to re-can them is to use a bigger can.

And Weinberg's Second Law, which postulates that,

If builders built buildings the way that programmers wrote programs, the irst

woodpecker to come along would destroy civilization.

There is true brilliance in this timeless wit, enjoyed and appreciated by generation

after generation of software developers.

The largest set of challenges that the modern programmer faces, and thus the source

of most of the wit that we as programmers revel in, revolves around the seemingly

boundless growth of complexity. Hardware becomes more complex. Operating

systems become more complex. Programming languages and APIs become more

complex. And the applications that we build and evolve, become more and

more complex.

The complexity of a system always seems to hover ever so slightly on the far side

of manageable, just slightly over the edge of the cliff. And while our work reality is

a world full of complexity—or perhaps because of that complexity—we gravitate

toward the pristine and the simple. While our day-to-day lives may be focused

on diagnosing failures in production systems, our guiding light is the concept of

continuous availability. While we may have to manually correct data when things

go wrong, our aspirations remain with data integrity and information reliability.

While the complexity of the legacy applications that we manage forces us to adopt

the most expensive means of adding capacity, our higher thoughts are focused on

commodity scale-out and linear scalability. And while the complex, layered, and

often twisted system designs result in hopelessly slow responses to user actions, we

fundamentally believe that users should experience near-instant responses for almost

any conceivable action they take.

In a word, we believe in the ilities .

Oracle Coherence 3.5 - Seovic_ Aleksandar.pdf

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