microservices design patterns

objects; The new object is used to re-use its existing functions by delegating methods that call existing objects. In short: Use the combination/aggregation relationship as much as possible, with less inheritance.7, Dimitri Law (least known principle) (Demeter Principle)Why is it called the least known principle, that is to say: an entity should be as small as possible interaction with other entities, so that the system function module is relatively independent. This means that a software entit

Six main principles:Single duty;Opening and closing principle;Dimitri Principle;The principle of the Richter replacement;dependency inversion principle;Interface Isolation principle23 Different design modes:Create Five types of models: Factory method mode, abstract Factory mode, singleton mode, builder mode, prototype mode. structure mode , a total of seven kinds: Adapter mode, adorner mode, proxy mode, appearance mode, bridging mode, combined mode, e

copy behavior of the object, you should also override the Copywithzone: methodOverrides should ensure that no new objects are created, such as:-(ID) Copywithzone: (struct _nszone *) zone {return self}5) If memory management uses non-arc, also consider overriding the Retain methodIt is necessary to ensure that the single object release is destroyed once, and retain does not make any sense, such as:-(ID) retain{return self;} Implementation of single-instance

Introduction to Design PatternsDesign Patterns are a set of reusable, most known, categorized purposes, code design experience Summary. Design patterns are used to reuse code, make code easier for others to understand, and ensure code reliability. There is no doubt that

The examples in the book are relatively easy to understand, but because it is written by foreigners, the habit of example is not very Chinese characteristics, may occasionally look awkward, there are language habits are not Chinese wind. 　　Of course, after reading this book, you will be able to understand exactly what design patterns can solve for you, and what problems cannot be solved for you (such as not

language is:1 , the dependencies between the modules can occur through abstraction, and the implementation class cannot have direct dependencies between them, and their dependencies are generated by interfaces or abstract classes;2 , interface, or abstract class does not depend on the implementation class;3 , implementing class-dependent interfaces or abstract classes;a more streamlined definition is "interface-oriented programming" ------OOD one of the essence. Benefits of the dependency inver

When you are constantly trying to discover new features from your application, do you find that the solution you proposed and some previously implemented things are as follows? When you are constantly trying to discover new features from your application, do you find that the solution you proposed is so similar to something you have previously implemented? If you are a programmer (even if you start for a short time), you may answer "yes ". It seems that you have used some previous code to solve

original link:https://boostlog.io/@sonuton/23-javascript-design-patterns-5adb006847018500491f3f7fTurn from:https://mp.weixin.qq.com/s?__biz=MzUxMzcxMzE5Ng==mid=2247488996idx=1sn= c337e4cfe2a67550f5f22536d58a9735chksm= f951a0a7ce2629b13bb306f9a2410e2be8e9f6958756be40c36937371c4ff5dfef2b78bbbb19mpshare=1scene=23 Srcid=060272xasmjgvam6eohoezw7#rdAuthor |sonutonThe translator-Hu HongxingEdit | Shanyun1. Why sho

Design principle one : single principle of responsibility Definition: There should be only one reason for a class to cause it to change. Advantages: Reduce the complexity of the class, improve the readability of the class, improve the maintainability of the system. Example: Super Human public class Superman {public void Maintains world peace () {//Superman maintains world Peace}} Extension: public class Animal {Public void Breathe (String animal) {Sys

Why design patterns? Let's take a look at the six principles and use the design pattern principles. Introduction　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 I don't like reading books very much, because I forgot to read ten lines of books, so I read the left teacher and copied it to improve my memory. This is the http://www.cnblogs.com/zuoxiaolong/p/pattern1.html of o