The Staged Event-Driven Architecture (SEDA) is a new design for building scalable Internet services. SEDA has three major goals: To support massive concurrency, on the order of tens of thousands of clients per node To exhibit robust performance under wide variations in load and, To simplify the design of complex Internet services. SEDA decomposes a complex, event-driven application into a set of stages connected by queues. This design avoids the high overhead associated with thread-based concurrency models, and decouples event and thread scheduling from application logic. SEDA enables services to be well-conditioned to load, preventing resources from being overcommitted when demand exceeds service capacity. Decomposing services into a set of stages also enables modularity and code reuse, as well as the development of debugging tools for complex event-driven applications.
标签： Event-Driven Architecture Internet building
上传时间： 2015-09-28
上传用户：日光微澜
# This resource site for "Grid Computing: Making the Global Infrastructure a Reality " edited by Fran Berman, Geoffrey Fox and Tony Hey. This is a book (over 1000 pages) published March 2003 by Wiley and (for those papers not published elsewhere) a special issue of concurrency and Computation: Practice and Experience
标签： Infrastructure Computing resource Reality
上传时间： 2013-11-28
上传用户：924484786
Thinking in Java, 3rd ed. Revision 4.0 Preface Introduction 1: Introduction to Objects 2: Everything is an Object 3: Controlling Program Flow 4: Initialization & Cleanup 5: Hiding the Implementation 6: Reusing Classes 7: Polymorphism 8: Interfaces & Inner Classes 9: Error Handling with Exceptions 10: Detecting Types 11: Collections of Objects 12: The Java I/O System 13: concurrency 14: Creating Windows & Applets 15: Discovering Problems 16: Analysis and Design A: Passing & Returning Objects B: Java Programming Guidelines C: Supplements D: Resources Index
标签： Introduction Thinking Revision Preface
上传时间： 2014-07-13
上传用户：netwolf
Learn how to leverage a key Java technology used to access relational data from Java programs, in an Oracle environment. Author Donald Bales begins by teaching you the mysteries of establishing database connections, and how to issue SQL queries and get results back. You ll move on to advanced topics such as streaming large objects, calling PL/procedures, and working with Oracle9i s object-oriented features, then finish with a look at transactions, concurrency management, and performance
标签： Java technology relational leverage
上传时间： 2017-08-02
上传用户：xz85592677
