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.
標簽: Event-Driven Architecture Internet building
上傳時間: 2015-09-28
上傳用戶:日光微瀾
This paper addresses a stochastic-#ow network in which each arc or node has several capacities and may fail. Given the demand d, we try to evaluate the system reliability that the maximum #ow of the network is not less than d. A simple algorithm is proposed "rstly to generate all lower boundary points for d, and then the system reliability can be calculated in terms of such points. One computer example is shown to illustrate the solution procedure.
標簽: capacities stochastic addresses network
上傳時間: 2015-12-03
上傳用戶:xfbs821
This paper addresses a stochastic-#ow network in which each arc or node has several capacities and may fail. Given the demand d, we try to evaluate the system reliability that the maximum #ow of the network is not less than d. A simple algorithm is proposed "rstly to generate all lower boundary points for d, and then the system reliability can be calculated in terms of such points. One computer example is shown to illustrate the solution procedure.
標簽: capacities stochastic addresses network
上傳時間: 2013-12-25
上傳用戶:ggwz258
This paper addresses a stochastic-#ow network in which each arc or node has several capacities and may fail. Given the demand d, we try to evaluate the system reliability that the maximum #ow of the network is not less than d. A simple algorithm is proposed "rstly to generate all lower boundary points for d, and then the system reliability can be calculated in terms of such points. One computer example is shown to illustrate the solution procedure.
標簽: capacities stochastic addresses network
上傳時間: 2014-01-09
上傳用戶:二驅蚊器
This paper addresses a stochastic-#ow network in which each arc or node has several capacities and may fail. Given the demand d, we try to evaluate the system reliability that the maximum #ow of the network is not less than d. A simple algorithm is proposed "rstly to generate all lower boundary points for d, and then the system reliability can be calculated in terms of such points. One computer example is shown to illustrate the solution procedure.
標簽: capacities stochastic addresses network
上傳時間: 2013-12-28
上傳用戶:獨孤求源
Anyone who interacts with today s modern databases needs to know SQL (Structured Query Language), the standard language for generating, manipulating, and retrieving database information. In recent years, the dramatic rise in the popularity of relational databases and multi-user databases has fueled a healthy demand for application developers and others who can write SQL code efficiently and correctly.
標簽: Structured interacts databases Language
上傳時間: 2016-01-02
上傳用戶:qlpqlq
Microsoft .net IL 匯編語言程序設計指南. To tell the truth, I don t think I had much choice in this matter. Let me explain. With Microsoft .NET technology taking the world by storm, with more and more information professionals getting involved, large numbers of books covering various aspects of this technology have started to arrive—and none too soon. Alas, virtually all of these books are dedicated to .NET-based programming in high-level languages and rapid application development (RAD) environments. No doubt this is extremely important, and I am sure all these books will have to be reprinted to satisfy the demand. But what about the plumbing?
標簽: Microsoft choice matter truth
上傳時間: 2014-11-06
上傳用戶:二驅蚊器
Abstract:It惴 described systematically the architecture and function of the software of Railway Auto-ticketing System as well as its charac— ter~tic and demand。Analysized the 8oftware middleware and messaged oriented middleware(MOM),discussed the feasibility of the app~cation 0f JWMQ in the Railway Auto-ticketing System.
標簽: systematically architecture described the
上傳時間: 2016-05-14
上傳用戶:JasonC
The C++ Client Edition contains a full set of C++ class libraries, with client side source code for comprehensive Internet and Intranet application development and enablement. Designed specifically for Visual C++ developers, this kit has the power and flexibility that you demand
標簽: libraries contains Edition Client
上傳時間: 2016-08-29
上傳用戶:陽光少年2016
H.264/AVC, the result of the collaboration between the ISO/IEC Moving Picture Experts Group and the ITU-T Video Coding Experts Group, is the latest standard for video coding. The goals of this standardization effort were enhanced compression efficiency, network friendly video representation for interactive (video telephony) and non-interactive applications (broadcast, streaming, storage, video on demand). H.264/AVC provides gains in compression efficiency of up to 50% over a wide range of bit rates and video resolutions compared to previous standards. Compared to previous standards, the decoder complexity is about four times that of MPEG-2 and two times that of MPEG-4 Visual Simple Profile. This paper provides an overview of the new tools, features and complexity of H.264/AVC.
標簽: the collaboration between Experts
上傳時間: 2013-12-30
上傳用戶:dongbaobao