w动态实例化-轻量级,组件间依赖程度.专一性-复用性.灵活性. https://www.codeigniter.com/userguide3/overview/goals.html http://codeigniter.org.cn/user_guide/overview/goals.html Design and Architectural Goals Our goal for CodeIgniter is maximum performance, capability, and flexib…

设计原则解读. 设计原则是对设计模式的约束性要求,属于设计中基本的四项特征,不符合此四项特征的设计,不具有生命力. 设计模式也是在此四项设计原则上的具体化实例化衍生物. Martin原文: http://www.cvc.uab.es/shared/teach/a21291/temes/object_oriented_design/materials_adicionals/principles_and_patterns.pdf Architecture and Dependencies 软件最开始…

Architecture Design Process The architecture design process focuses on the decomposition of a system into different components and their interactions to satisfy functional and nonfunctional requirements. The key inputs to software architecture design…

 Prism provides guidance designed to help you more easily design and build rich, flexible, and easy-to-maintain Windows Presentation Foundation (WPF) desktop applications. Using design patterns such as Model-View-ViewModel (MVVM), Composite View, and…

Awesome Courses  Introduction There is a lot of hidden treasure lying within university pages scattered across the internet. This list is an attempt to bring to light those awesome courses which make their high-quality material i.e. assignments, lect…

This chapter covers ■ The origins of Hadoop, HBase, and NoSQL ■ Common use cases for HBase ■ A basic HBase installation ■ Storing and querying data with HBase 本章要点 Hadoop,HBase和NoSQL的起源 HBase的常见应用案例 HBase的基本安装 基于HBase保存与查询数据 http://www.uifanr.com/ HB…

年份:2015 ABSTRACT 最近提出了网络功能虚拟化,以提高网络服务供应的灵活性并减少新服务的上市时间. 通过利用虚拟化技术和通用的商用可编程硬件(例如通用服务器,存储和交换机),NFV可以将网络功能的软件实现与底层硬件分离. 作为一项新兴技术,NFV给网络运营商带来了诸多挑战,例如,虚拟设备网络性能的保证,其动态实例化和迁移以及高效放置. 在本文中,我们提供了NFV的简要概述,解释了NFV的要求和体系结构,介绍了几个用例,并讨论了这个新兴研究领域中的挑战和未来方向. INTRODUCTI…

8.02  Physics II (电磁学基础) Introduction to electromagnetism and electrostatics: electric charge, Coulomb's law, electric structure of matter; conductors and dielectrics. Concepts of electrostatic field and potential, electrostatic energy. Electric curr…

Electronic design automation (EDA), also referred to as electronic computer-aided design (ECAD),[1] is a category of software tools for designing electronic systems such as integrated circuits (ICs) and printed circuit boards (PCB). The tools work to…

w Architectural Styles and the Design of Network-based Software Architectures  http://www.ics.uci.edu/~fielding/pubs/dissertation/top.htm Fielding Dissertation: CHAPTER 5: Representational State Transfer (REST)  http://www.ics.uci.edu/~fielding/pubs/…