Web Services

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Changing Software and Legacy Code By Michael Feathers Jan 14, 2005 The old adage, "If it ain't broke, don't fix it," doesn't necessarily apply in the case of technology. Projects continually require alterations, updates, and enhancements. This chapter outlines the nature of code change, and suggests some of the challenges to be faced when making these changes.

Characteristics of Event-Driven Architecture By Angela Yochem, Frank Martinez, Les Phillips, Hugh Taylor Mar 2, 2009 How should the components work together to realize the desired functionality of an Event-Driven Architecture (EDA)?

Cloud Computing: Orchestrating and Automating Technical Building Blocks Nov 28, 2011 This chapter provides a detailed overview of how an Infrastructure as a Service (IaaS) service is orchestrated and automated.

Designing Software in a Distributed World By Thomas A. Limoncelli, Strata R. Chalup, Christina J. Hogan Oct 1, 2014 This chapter from The Practice of Cloud System Administration: Designing and Operating Large Distributed Systems, Volume 2 is an overview of what is involved in designing services that use distributed computing techniques. These are the techniques all large web sites use to achieve their size, scale, speed, and reliability.

Saving Money with Legacy Data By Stephen B. Morris Mar 11, 2005 Migrating legacy source code is a time-consuming and complicated business. The same is often true for the migration of legacy data, but there are some useful techniques that can reduce the cost. In this article, network management software specialist Stephen Morris discusses the migration (or upgrading) of legacy data into XML format. This process proves to be surprisingly straightforward and low in cost.

Saving Money with Legacy Source Code By Stephen B. Morris Feb 4, 2005 A happy marriage between legacy and new source code helps to reduce the cost of development. Network management specialist Stephen Morris discusses the way in which mixed language techniques and software design patterns can help to ease the inevitable migration of source code.

The Practice of Cloud System Administration: Operations in a Distributed World By Thomas A. Limoncelli, Strata R. Chalup, Christina J. Hogan Sep 22, 2014 This chapter from The Practice of Cloud System Administration: Designing and Operating Large Distributed Systems, Volume 2 starts with some operations management background, then discusses the operations service life cycle, and ends with a discussion of typical operations work strategies.

UML Interaction Diagrams By Craig Larman Mar 4, 2005 This chapter introduces the notation used in the UML for two common types of interaction diagrams (sequence and communication interaction diagrams). This chapter is an overview