bwg strategy

/* Copyright Notice: Can be reproduced arbitrarily, please be sure to indicate the original source of the article and author information. */ Research on search engine cache strategy Zhang Junlin Timestamp:2005 year October A The conclusion about search engine user query: (1) The user query has a large proportion of repeatability. There are 30% to 40% user queries that are duplicate queries. (2) Most duplicate user queries are re-accessed at short

Design Pattern in. Net -- Strategy Pattern I. Mode Overview "Interface-oriented programming" is the most important principle in object-oriented programming. According to the principle of "encapsulation change", we often abstract and define the easy-to-change part as an interface. The caller only needs to know the external definition of the interface. In the design pattern, the Strategy pattern is the best

more undesirable if we include these policies on the client, which will cause the client program to be large and difficult to maintain, and the problem will become more serious if there are a large number of algorithms to choose from.Example 1: A menu function can determine whether to use a horizontal or vertical arrangement based on the user's "skin" preferences. Colleagues can flexibly increase the display style of the menu.Example 2: Travel: We can have several strategies to consider: Can ri

MySQL Tutorial database tutorial full backup and incremental backup strategy for backup recovery Backup strategy One: Copy database files directly (not recommended)Backup strategy Two: Use Mysqlhotcopy backup Database (full backup, suitable for small database backup)Backup strategy Three: Use mysqldump Backup Database

From: Lu Zhenyu Code Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> // Strategy pattern -- Structural example Using System; //"Strategy"AbstractClassStrategy{//MethodsAbstractPublicVoidAlgorithminterface ();} // "Concretestrategya" Class Concretestrategya: Strategy{ // Methods Override

Objective:The simple Factory mode and strategy mode is the majority of programmers, in the study of design patterns in contact with the earliest, or in the work practice is also used in a relatively more than two design patterns.One is the creation type, the other is the behavioral type, however two different types of patterns, in some places also have a trace of similarities, at the same time in a certain scenario combined with, can play a particular

1. Concept Policy mode: Encapsulates a specific set of behaviors and algorithms into classes to accommodate certain context contexts, which are policy patterns 2. function Use policy mode to implement IOC, dependency inversion, control inversion 3. For example If an e-commerce website system, targeting different groups of people to jump to different items, and all advertising sites show different ads 4. The problem to be resolved 1. Do not chang

"Component Collaboration" mode:#现代软件专业分工之后的第一个结果是 "Framework-to-application partitioning", the "component collaboration" mode, which uses late binding to achieve loose coupling between the framework and the application, is a common pattern in collaboration between the two.#典型模式: Template Method, Strategy, observer/eventPart 1 Template Method template mode　　Motive (motivation)#在软件构建过程中, for a task, it often has a stable overall operating structure, but

Policy mode:　　6. Encapsulate a specific set of behaviors and algorithms into classes to accommodate certain contextual contexts.1, multiple classes only differ in performance behavior, you can use the Strategy mode, at run time to dynamically select the specific behavior to execute.2. Different strategies (algorithms) need to be used in different situations, or strategies may be implemented in other ways in the future.3, the customer hides the specifi

Today I would like to share with you some of the strategy of Bitcoin futures. "Market-making strategy" is the most famous one in the strategy, where I want to share some of my experiences with my own thoughts. Now let's start with the concept. One, what is to do the city strategy The market-making

Policy ModeStrategy mode: In our life in fact there are many such examples, such as we have to do one thing, say reading, a like to look at the introduction, and then look at the table of contents, and then from the first chapter, this is a reading strategy, B likes directly from the first chapter to see, C likes to read the introduction directly, then see the end. This is the three ways to read, that is, the stra