Software Systems Architecture, Second Edition is a highly regarded, practitioner-oriented guide to designing and implementing effective architectures for information systems. It is both a readily accessible introduction to software architecture and an invaluable handbook of well-established best practices. With this book you will learn how to Design and communicate an architecture that reflects and balances the different needs of its stakeholders Focus on architecturally significant aspects of design, including frequently overlooked areas such as performance, resilience, and location Use scenarios and patterns to drive the creation and validation of your architecture Document your architecture as a set of related views Reflecting new standards and developments in the field, this new edition extends and updates much of the content, and Adds a “system context viewpoint” that documents the system’s interactions with its environment Expands the discussion of architectural principles, showing how they can be used to provide traceability and rationale for architectural decisions Explains how agile development and architecture can work together Positions requirements and architecture activities in the project context Presents a new lightweight method for architectural validation Whether you are an aspiring or practicing software architect, you will find yourself referring repeatedly to the practical advice in this book throughout the lifecycle of your projects. A supporting Web site containing further information can be found at www.viewpoints-and-perspectives.info.
IT had rained in torrents all the way down from Schenectady, so when Jack Duane glimpsed the lights of what looked to be a big house through the trees, he braked his battered, convertible sedan to a stop at the side of the road. Mud lay along the fenders and running boards; mud and water had spumed up and freckled Duane’s face and hat. He pulled off the latter—it was soggy—and slapped it on the seat beside him, leaning out and squinting through the darkness and falling water. He was on the last lap of a two weeks’ journey from San Francisco, his objective being New York City. There he hoped to wangle a job as foreign correspondent from an old crony, J. J. Molloy, now editor of the New York Globe. Adventurer, journalist, globetrotter, Duane was of the type that is always on the move. “It’s a place, anyway, Moses,” he said to the large black man beside him, his servitor and bodyguard, who had accompanied him everywhere for the past three years. “Somebody lives there; they ought to have some gas.” “Yasah,” said Moses, staring past Duane’s shoulder, “it’s a funny-looking place, suh.” Duane agreed. Considering that they were seventy miles from New York, in the foothills of the Catskills, with woods all around them and the rain pouring down, the thing they saw through the trees, some three hundred yards from the country road, was indeed peculiar. It looked more like a couple of Pullman cars coupled together and lighted, than like a farmer’s dwelling. “Fenced in, too,” said Duane, pointing to the high steel fence that bordered the road, separating them from the object of their vision. “And look there—” A fitful flash of lightning in the east, illuminating the distant treetops, showed up the towering steel and network of a high-voltage electric line’s tower. The roving journalist muttered something to express his puzzlement, and got out of the car. Moses followed him. “Well,” said Duane presently, when they had stared a moment longer, “whatever it is, I’m barging in. We’ve got to have some gas or we’ll never make New York tonight.” MOSES agreed. The two men started across the road—the big Negro hatless and wearing a slicker—the reporter in a belted trench coat, his brown felt hat pulled out of shape on his head. “It’s a big thing,” Duane said as he and Moses halted at the fence and peered through. Distantly, he could see now that the mysterious structure in the woods was at least a hundred yards long, flat-topped and black as coal except from narrow shafts of light that came from its windows. “And look at the light coming out of the roof.” That was, indeed, the most peculiar feature of this place they had discovered. From a section of the roof near the center, as though through a skylight, a great white light came out, illuminating the slanting rain and the bending trees.
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