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.
Delphi for PHP 用戶手冊，英文版，格式PDF。
The IDE User s Guide includes an overview of Delphi for PHP, information on using the IDE, debugging, creating a database application, and a VCL for PHP Component Writer s Guide.
Beginning with an overview of SQL Server 2000, this book discusses online transaction processing (OLTP) and online analytical processing (OLAP), features a tour of different SQL Server releases, and offers a guide to installation. The author describes and demonstrates the changes since SQL Server 7.0, thoroughly exploring SQL Server 2000 s capacity as a Web-enabled database server. Readers are then immersed in advanced database administration topics such as performance optimization and debugging techniques.
* This a simple tool to send/receive UDP packet based on a
* free software developed by Neil Deason.
* The purpose of program is to simulate a remote MGC So that the
* SIP Message debugging/testing is possible.
Samples are organized by chapter, and then by "application" or example name. You should open a project in Visual Studio .NET through the .sln (solution) file.
Note that Visual Studio .NET automatically creates various temporary and debugging files in the obj and bin sub-directory for each project. The actual uncompiled code is only the .vb files that are contained in the root project directory.
Core Java 2 Volume I - Fundamentals, Seventh Edition
Completely revised and up-to-date coverage of
Generic programming, restrictions and limitations, type bounds, wilcard types, and generic reflection
Swing GUI development, including input validation and other enhancements
Exception handling and debugging, including chained exceptions, stack frames, assertions, and logging
Streams and files, the new I/O API, memory-mapped files, file locking, and character set encoders/decoders
Regular expressions using the powerful java.util.regex package
Inner classes, reflection, and dynamic proxies
Application packaging and the Preferences API
This version of the book is a DRAFT! The chapters are mostly complete, but not carefully edited. Some of the debugging sections are not done, and not all chapters have exercises.
If you have high-level comments about the organization of the book or the topics covered, please send me email at feedback{at}thinkpython{dot}com. It is probably too early for detailed comments like spelling errors.
