flyweight designs

　　"Object Performance" modeObject-oriented is a good solution to the "abstract" problem, but it must be paid a certain price. In general, object-oriented costs are largely negligible. In some cases, however, object-oriented costs must be handled with care.　　Typical mode# Singleton# Flyweight　　Part 1 Single-piece mode (single-case mode )　　Motivation#在软件系统中, there are often special classes that must be guaranteed to have only one instance of the system

The main purpose of the enjoy meta-mode is to share the shared pool, which can reduce the overhead of memory when there are many objects in the system, and is usually used in conjunction with the Factory mode.Flyweightfactory is responsible for creating and managing the unit of entitlement, and when a client requests, the factory checks to see if there are any eligible objects in the current object pool, and if so, returns an already existing object, and if not, creates a new object,

When we play, we will find that because there are only three races in the interstellar race, there are only dozens of units in the class. Although the remaining blood of each individual soldier is different, the image animation of the same class is the same, even if different players are just different colors. For example, the crew of a human race. And most players use only some of the most common classes, and often don't make all of them. To solve the problem: the image of the class to share

You can use the meta technology to effectively support a large number of fine-grained objects. For more information, see. The "Flyweight Pattern" is an English term. I am very grateful to the man who translated the "Flyweight Pattern" into the "exclusive" Pattern, because the word clearly expresses the way this Pattern is used; if it is translated into a feather or fly mode, although it can implicitly show

Enjoy meta-mode refers to "using shared technology to effectively support a large number of fine-grained objects"All "use shared technology to effectively support a large number of fine-grained objects" we can understand that when the number of fine-grained objects is too high, the cost of using shared technology can greatly reduce the cost of running1. Structure1.1 Simple-to-enjoy meta-mode structureThis mode, all the shared meta objects are shareable, such as(1) Abstract enjoy meta-role (

Design Pattern-flyweight-playball It's okay on weekends. I have an appointment with my friends to go to the gym (Gymnasium) to play. This gym (Gymnasium) provides a variety of balls. Because we have many players, we chose badminton and pingpangball) for vollyball and other types of balls, we must first fill in the playballlist and then get the ball from the materials department. Let's take a look at how to implement this process? 1. First

The "Flyweight Pattern" is an English term. I am very grateful to the man who translated the "Flyweight Pattern" into the "exclusive" Pattern, because the word clearly expresses the way this Pattern is used; if it is translated into a feather or fly mode, although it can implicitly show the purpose of using this mode, it still does not grasp the key of this mode. The metadata mode is defined as follows: Us

Use sharing to support large numbers of fine-grained objects efficiently.I. flyweight Mode Flyweight is the most lightweight in boxing, that is, "Fly magnitude", which is translated by some authors as "Yu magnitude ". Here, the "share mode" is used to better reflect the intention of the mode. The metadata mode supports a large number of fine-grained objects efficiently in a shared manner. The key to enablin

One, the element (Flyweight) mode Flyweight in boxing competition, the most lightweight, that is, "fly level", some authors translated as "feather grade." This use of the "element mode" is more reflective of the intent of the pattern. The privilege mode supports a large number of fine-grained objects efficiently and in a shared way. The key to sharing a shared object is to distinguish between the intrinsi

In the mode of "Flyweight pattern", I would like to thank the strongman who translated Flyweight pattern into the meta mode, because the word clearly shows the way in which the pattern is used; If the translation becomes a feather-grade model or a fly-level model, etc., Although implicit in the use of this pattern to achieve the purpose, but still do not grasp the key to this model. The privilege mode is d

1 Definition: Flyweight mode (in) Use sharing to support large numbers of fine-grained objects. (using shared objects can effectively support a large number of fine-grained objects.) ) The privilege mode requires that objects that can be shared must be fine-grained objects. The key to sharing is the distinction between internal states (intrinsic State) and external states (extrinsic state). The following is a brief introduction to the internal state

Enjoy meta mode (English: Flyweight pattern) is a software design pattern. It uses shared objects to minimize memory usage and to share information to as many similar objects as possible, and it is suitable for use in large amounts of memory when a large number of objects are simply duplicated and thus result in unacceptable usage. Usually part of the state in an object can be shared. It is common practice to put them in an external data structure and

Enjoy meta mode (Flyweight pattern)IntroducedUse shared technology to effectively support a large number of fine-grained objects.ExampleThere is a message entity class, and some objects have an insert () and get () method for its operations, and these objects are now supported using shared technology.　　MessagemodelUsing system;using system.collections.generic;using system.text;namespace pattern.flyweight{//　　AbstractmessageUsing system;using system.co

Mode motiveObject-oriented technology solves some of the flexibility or scalability problems, but in many cases you need to increase the number of classes and objects in the system. When the number of objects is too large, it will lead to high operating costs, resulting in performance degradation and so on.The mode of enjoyment was born to solve this kind of problem. the enjoy meta-mode enables the reuse of identical or similar objects through shared technology .The same content that can be shar

system, resulting in a 369M memory overhead and simply the overhead of an instance of an object.2. QuestionsUsing object methods to create a large number of object instances, resulting in high runtime prices-mainly in memory, how can you avoid this overhead by generating a large number of object instances in an object-oriented manner?On this issue, how the string retention pool is implemented. Provides a good reference. For specific implementation ideas, refer to string retention and string poo

Flyweight Pattern) Code download 1. Concept Use the sharing technology to effectively support a large number of fine-grained objects. 2. Class Diagram Model. cs using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace FlyweightPattern{ public class Model { public double D1 { get; set; } public double D2 { get; set; } }}

(According to the msdn webcast courses) Object-oriented solution solves the problem of System Abstraction without compromising the system performance. However, in some special applications, because the number of objects is too large, adopting object-oriented will bring an unbearable internal overhead to the system. For example, metadata and other objects in graphics applications, character objects in word processing software, etc. If the solution is purely correct, the problem is that a large

Label: Ar uses Java SP data BS to design program objects 11_dark horse programmer _ Zhang Xiaoxiang _ Java basic reinforcement _ Automatic Disassembly box for basic data and metadata-sharing design mode Public static void main (string ARGs []) { Integer i11 = 1; System. Out. println (i11 + 2 ); Integer i12 = 1; System. Out. println (i11 = i12 ); Integer i21 = 128; Integer i22 = 128; System. Out. println (i21 = i22 ); } I11 is created using boxing (from the basi

Enjoy meta mode flyweightThe combined mode solves how the object is processed when it is tree-shaped. When the system needs to use a lot of duplicate objects, and these objects to consume a large amount of resources, you need to use the enjoy meta-mode to solve.Singleton mode, a class has only one unique object. That is, no matter how many times new, just want to create an object of this class, if not in singleton mode, no new will create an object, this is necessary for the system to use a larg

(BookFactory.BookType.JAVASCRIPT). read (); Bookfactory.getbook (BookFactory.BookType.JAVASCRIPT). read (); Bookfactory.getbook (BookFactory.BookType.PYTHON). read (); Bookfactory.getbook (BookFactory.BookType.PYTHON). read (); Bookfactory.getbook (BookFactory.BookType.KOTLIN). read (); Bookfactory.getbook (BookFactory.BookType.KOTLIN). read (); Bookfactory.getbook (BookFactory.BookType.KOTLIN). read (); The book is numbered, the instructions are