.NET 7 Design Patterns In-Depth<\/p>\n
Enhance code efficiency and maintainability with .NET Design Patterns<\/p>\n
Vahid Farahmandian<\/p>\n
Introduction to Design Patterns<\/p>\n<\/li>\n
\u8bbe\u8ba1\u6a21\u5f0f\u7b80\u4ecb<\/p>\n<\/li>\n
Creational Design Patterns<\/p>\n<\/li>\n
\u521b\u9020\u5f0f\u8bbe\u8ba1\u6a21\u5f0f<\/p>\n<\/li>\n
Structural Design Patterns<\/p>\n<\/li>\n
\u7ed3\u6784\u8bbe\u8ba1\u6a21\u5f0f<\/p>\n<\/li>\n
Behavioral Design Patterns \u2013 Part I<\/p>\n<\/li>\n
\u884c\u4e3a\u8bbe\u8ba1\u6a21\u5f0f \u2013 \u7b2c\u4e00\u90e8\u5206<\/p>\n<\/li>\n
Behavioral Design Patterns \u2013 Part II<\/p>\n<\/li>\n
\u884c\u4e3a\u8bbe\u8ba1\u6a21\u5f0f \u2013 \u7b2c\u4e8c\u90e8\u5206<\/p>\n<\/li>\n
Domain Logic Design Patterns<\/p>\n<\/li>\n
\u57df\u903b\u8f91\u8bbe\u8ba1\u6a21\u5f0f<\/p>\n<\/li>\n
Data Source Architecture Design Patterns<\/p>\n<\/li>\n
\u6570\u636e\u6e90\u67b6\u6784\u8bbe\u8ba1\u6a21\u5f0f<\/p>\n<\/li>\n
Object-Relational Behaviors Design Patterns<\/p>\n<\/li>\n
\u5bf9\u8c61\u5173\u7cfb\u884c\u4e3a\u8bbe\u8ba1\u6a21\u5f0f<\/p>\n<\/li>\n
Object-Relational Structures Design Patterns<\/p>\n<\/li>\n
\u5bf9\u8c61\u5173\u7cfb\u7ed3\u6784\u8bbe\u8ba1\u6a21\u5f0f<\/p>\n<\/li>\n
Object-Relational Metadata Mapping Design Patterns<\/p>\n<\/li>\n
\u5bf9\u8c61\u5173\u7cfb\u5143\u6570\u636e\u6620\u5c04\u8bbe\u8ba1\u6a21\u5f0f<\/p>\n<\/li>\n
Web Presentation Design Patterns<\/p>\n<\/li>\n
Web \u8868\u793a\u8bbe\u8ba1\u6a21\u5f0f<\/p>\n<\/li>\n<\/ol>\n
12 . Distribution Design Patterns
\n12 .\u5206\u5e03\u8bbe\u8ba1\u6a21\u5f0f<\/p>\n
Offline Concurrency Design Patterns<\/p>\n<\/li>\n
\u79bb\u7ebf\u5e76\u53d1\u8bbe\u8ba1\u6a21\u5f0f<\/p>\n<\/li>\n
Session State Design Patterns<\/p>\n<\/li>\n
\u4f1a\u8bdd\u72b6\u6001\u8bbe\u8ba1\u6a21\u5f0f<\/p>\n<\/li>\n
Base Design Patterns<\/p>\n<\/li>\n
\u57fa\u672c\u8bbe\u8ba1\u6a21\u5f0f<\/p>\n<\/li>\n<\/ol>\n
\u5173\u4e8e\u4f5c\u8005
\nVahid Farahmandian, who currently works as the CEO of Spoota company, was born in Urmia, Iran, in 1989. He got a BSc in Computer Software Engineering from Urmia University and an MSc degree in Medical Informatics from Tarbiat Modares University. He has more than 17 years of experience in the information and communication technology field and more than a decade of experience in teaching different courses of DevOps, programming languages, and databases in various universities, institutions, and organizations in Iran. Vahid also is an active speaker in international shows and conferences, including Microsoft .NET Live TV, Azure, .NET, and SQL Server conferences. The content published by Vahid was available through YouTube and Medium and had thousands of viewers and audiences.<\/p>\n
Vahid Farahmandian \u76ee\u524d\u62c5\u4efb Spoota \u516c\u53f8\u7684\u9996\u5e2d\u6267\u884c\u5b98\uff0c\u4e8e 1989 \u5e74\u51fa\u751f\u4e8e\u4f0a\u6717\u4e4c\u5c14\u7c73\u4e9a\u3002\u4ed6\u83b7\u5f97\u4e86\u4e4c\u5c14\u7c73\u4e9a\u5927\u5b66\u7684\u8ba1\u7b97\u673a\u8f6f\u4ef6\u5de5\u7a0b\u5b66\u58eb\u5b66\u4f4d\u548c\u5854\u5c14\u6bd4\u4e9a\u7279\u83ab\u8fbe\u96f7\u65af\u5927\u5b66\u7684\u533b\u5b66\u4fe1\u606f\u5b66\u7855\u58eb\u5b66\u4f4d\u3002\u4ed6\u5728\u4fe1\u606f\u548c\u901a\u4fe1\u6280\u672f\u9886\u57df\u62e5\u6709\u8d85\u8fc7 17 \u5e74\u7684\u7ecf\u9a8c\uff0c\u5e76\u5728\u4f0a\u6717\u7684\u5404\u6240\u5927\u5b66\u3001\u673a\u6784\u548c\u7ec4\u7ec7\u4e2d\u6559\u6388 DevOps\u3001\u7f16\u7a0b\u8bed\u8a00\u548c\u6570\u636e\u5e93\u7684\u4e0d\u540c\u8bfe\u7a0b\u65b9\u9762\u62e5\u6709\u5341\u591a\u5e74\u7684\u7ecf\u9a8c\u3002Vahid \u8fd8\u662f\u56fd\u9645\u8282\u76ee\u548c\u4f1a\u8bae\u7684\u79ef\u6781\u6f14\u8bb2\u8005\uff0c\u5305\u62ec Microsoft .NET Live TV\u3001Azure\u3001.NET \u548c SQL Server \u4f1a\u8bae\u3002Vahid \u53d1\u5e03\u7684\u5185\u5bb9\u53ef\u901a\u8fc7 YouTube \u548c Medium \u83b7\u5f97\uff0c\u5e76\u62e5\u6709\u6210\u5343\u4e0a\u4e07\u7684\u89c2\u4f17\u548c\u89c2\u4f17\u3002<\/p>\n
\u5173\u4e8e\u5ba1\u9605\u8005<\/p>\n
Kratika Jain is a senior software developer specializing in .NET technologies. She has a strong understanding of C#, ASP.NET, MVC, .NET Core, SQL, and Entity Framework. She has participated in agile project management, employs continuous integration\/deployment (CI\/CD) using Azure DevOps, and delivered robust and scalable software solutions. As a meticulous technical reviewer, she ensures accuracy and quality in technical content. Her attention to detail allows her to identify potential pitfalls and offer valuable insights for improvement. With her expertise in .NET development and dedication to enhancing technical content, she contributes to empowering developers and enabling their success in mastering the .NET ecosystem. She is a natural problem solver, team player, adaptable, and always seeking new challenges. You can connect with her on LinkedIn at www.linkedin.com\/in\/kratikajain29\/ or on Twitter via @_KratikaJain.<\/p>\n
Kratika Jain \u662f\u4e00\u4f4d\u4e13\u95e8\u4ece\u4e8b .NET \u6280\u672f\u7684\u9ad8\u7ea7\u8f6f\u4ef6\u5f00\u53d1\u4eba\u5458\u3002\u5979\u5bf9 C#\u3001ASP.NET\u3001MVC\u3001.NET Core\u3001SQL \u548c\u5b9e\u4f53\u6846\u67b6\u6709\u5f88\u5f3a\u7684\u7406\u89e3\u3002\u5979\u53c2\u4e0e\u4e86\u654f\u6377\u9879\u76ee\u7ba1\u7406\uff0c\u4f7f\u7528 Azure DevOps \u91c7\u7528\u6301\u7eed\u96c6\u6210\/\u90e8\u7f72 \uff08CI\/CD\uff09\uff0c\u5e76\u63d0\u4f9b\u4e86\u5f3a\u5927\u4e14\u53ef\u6269\u5c55\u7684\u8f6f\u4ef6\u89e3\u51b3\u65b9\u6848\u3002\u4f5c\u4e3a\u4e00\u540d\u4e00\u4e1d\u4e0d\u82df\u7684\u6280\u672f\u5ba1\u67e5\u5458\uff0c\u5979\u786e\u4fdd\u6280\u672f\u5185\u5bb9\u7684\u51c6\u786e\u6027\u548c\u8d28\u91cf\u3002\u5979\u5bf9\u7ec6\u8282\u7684\u5173\u6ce8\u4f7f\u5979\u80fd\u591f\u8bc6\u522b\u6f5c\u5728\u7684\u9677\u9631\u5e76\u63d0\u4f9b\u6709\u4ef7\u503c\u7684\u6539\u8fdb\u89c1\u89e3\u3002\u51ed\u501f\u5979\u5728 .NET \u5f00\u53d1\u65b9\u9762\u7684\u4e13\u4e1a\u77e5\u8bc6\u548c\u5bf9\u589e\u5f3a\u6280\u672f\u5185\u5bb9\u7684\u5949\u732e\u7cbe\u795e\uff0c\u5979\u4e3a\u589e\u5f3a\u5f00\u53d1\u4eba\u5458\u7684\u80fd\u529b\u5e76\u5e2e\u52a9\u4ed6\u4eec\u6210\u529f\u638c\u63e1 .NET \u751f\u6001\u7cfb\u7edf\u505a\u51fa\u4e86\u8d21\u732e\u3002\u5979\u662f\u4e00\u4e2a\u5929\u751f\u7684\u95ee\u9898\u89e3\u51b3\u8005\u3001\u56e2\u961f\u5408\u4f5c\u8005\u3001\u9002\u5e94\u6027\u5f3a\uff0c\u5e76\u4e14\u603b\u662f\u5bfb\u6c42\u65b0\u7684\u6311\u6218\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7 LinkedIn at www.linkedin.com\/in\/kratikajain29\/ \u6216\u901a\u8fc7 @_KratikaJain \u5728 Twitter \u4e0a\u4e0e\u5979\u8054\u7cfb\u3002<\/p>\n
Gourav Garg is a Senior Software Engineer from India who has been helping companies to build scalable products. He holds a bachelor\u2019s degree in software engineering and has been programming for 11 years. He is proficient in .net, C#, and Entity Framework. He has experience in delivering several products and many features at his work.<\/p>\n
Gourav Garg \u662f\u6765\u81ea\u5370\u5ea6\u7684\u9ad8\u7ea7\u8f6f\u4ef6\u5de5\u7a0b\u5e08\uff0c\u4e00\u76f4\u5728\u5e2e\u52a9\u516c\u53f8\u6784\u5efa\u53ef\u6269\u5c55\u7684\u4ea7\u54c1\u3002\u4ed6\u62e5\u6709\u8f6f\u4ef6\u5de5\u7a0b\u5b66\u58eb\u5b66\u4f4d\uff0c\u4ece\u4e8b\u7f16\u7a0b\u5de5\u4f5c\u5df2\u6709 11 \u5e74\u3002\u4ed6\u7cbe\u901a .net\u3001C# \u548c Entity Framework\u3002\u4ed6\u5728\u5de5\u4f5c\u4e2d\u62e5\u6709\u4ea4\u4ed8\u591a\u79cd\u4ea7\u54c1\u548c\u8bb8\u591a\u529f\u80fd\u7684\u7ecf\u9a8c\u3002<\/p>\n
Gourav has also experience with JavaScript-related tech stacks like Angular and React. He has developed quite a few open-source libraries using ES6 and Angular.<\/p>\n
Gourav \u8fd8\u62e5\u6709 Angular \u548c React \u7b49 JavaScript \u76f8\u5173\u6280\u672f\u5806\u6808\u7684\u7ecf\u9a8c\u3002\u4ed6\u4f7f\u7528 ES6 \u548c Angular \u5f00\u53d1\u4e86\u4e0d\u5c11\u5f00\u6e90\u5e93\u3002<\/p>\n
\u81f4\u8c22
\nThere are a few people I want to thank for the continued and ongoing support they have given me during the writing of this book. First and foremost, I would like to thank my parents for continuously encouraging me to write the book \u2014 I could have never completed this book without their support.<\/p>\n
\u6211\u60f3\u611f\u8c22\u4e00\u4e9b\u4eba\uff0c\u4ed6\u4eec\u5728\u5199\u8fd9\u672c\u4e66\u671f\u95f4\u7ed9\u4e88\u6211\u6301\u7eed\u7684\u652f\u6301\u3002\u9996\u5148\uff0c\u6211\u8981\u611f\u8c22\u6211\u7684\u7236\u6bcd\u4e00\u76f4\u9f13\u52b1\u6211\u5199\u8fd9\u672c\u4e66\u2014\u2014\u5982\u679c\u6ca1\u6709\u4ed6\u4eec\u7684\u652f\u6301\uff0c\u6211\u6c38\u8fdc\u4e0d\u53ef\u80fd\u5b8c\u6210\u8fd9\u672c\u4e66\u3002<\/p>\n
I also need to thank my dear wife, who has always supported me. Finally, I would like to thank all my friends and colleagues who have been by my side and supported me during all these years. I really could not stand where I am today without the support of all of them.<\/p>\n
\u6211\u8fd8\u9700\u8981\u611f\u8c22\u6211\u4e00\u76f4\u652f\u6301\u6211\u7684\u4eb2\u7231\u7684\u59bb\u5b50\u3002\u6700\u540e\uff0c\u6211\u8981\u611f\u8c22\u8fd9\u4e9b\u5e74\u6765\u4e00\u76f4\u966a\u4f34\u5728\u6211\u8eab\u8fb9\u5e76\u652f\u6301\u6211\u7684\u6240\u6709\u670b\u53cb\u548c\u540c\u4e8b\u3002\u5982\u679c\u6ca1\u6709\u4ed6\u4eec\u6240\u6709\u4eba\u7684\u652f\u6301\uff0c\u6211\u771f\u7684\u65e0\u6cd5\u7ad9\u4eca\u5929\u3002<\/p>\n
My gratitude also goes to the team at BPB Publications, who supported me and allowed me to write and finish this book.
\n\u6211\u8fd8\u8981\u611f\u8c22 BPB Publications \u7684\u56e2\u961f\uff0c\u4ed6\u4eec\u652f\u6301\u6211\u5e76\u5141\u8bb8\u6211\u7f16\u5199\u548c\u5b8c\u6210\u8fd9\u672c\u4e66\u3002<\/p>\n
\u524d\u8a00<\/p>\n
This book has tried to present important design patterns (including GoF design patterns and Patterns of Enterprise Application Architecture) in software production with a simple approach, along with practical examples using .NET 7.0 and C#.<\/p>\n
\u672c\u4e66\u8bd5\u56fe\u7528\u7b80\u5355\u7684\u65b9\u6cd5\u5448\u73b0\u8f6f\u4ef6\u751f\u4ea7\u4e2d\u91cd\u8981\u7684\u8bbe\u8ba1\u6a21\u5f0f\uff08\u5305\u62ec GoF \u8bbe\u8ba1\u6a21\u5f0f\u548c\u4f01\u4e1a\u5e94\u7528\u7a0b\u5e8f\u67b6\u6784\u6a21\u5f0f\uff09\uff0c\u4ee5\u53ca\u4f7f\u7528 .NET 7.0 \u548c C# \u7684\u5b9e\u9645\u793a\u4f8b\u3002<\/p>\n
This book will be useful for software engineers, programmers, and system architects. Readers of this book are expected to have intermediate knowledge of C#.NET programming language, .NET 7.0, and UML.<\/p>\n
\u8fd9\u672c\u4e66\u5bf9\u8f6f\u4ef6\u5de5\u7a0b\u5e08\u3001\u7a0b\u5e8f\u5458\u548c\u7cfb\u7edf\u67b6\u6784\u5e08\u5f88\u6709\u7528\u3002\u672c\u4e66\u7684\u8bfb\u8005\u5e94\u5177\u5907 C#.NET \u7f16\u7a0b\u8bed\u8a00\u3001.NET 7.0 \u548c UML \u7684\u4e2d\u7ea7\u77e5\u8bc6\u3002<\/p>\n
Practical and concrete examples have been used in writing this book. Each design pattern begins with a short descriptive sentence and is then explained as a concrete scenario. Finally, each design pattern's key points, advantages, disadvantages, applicability, and related patterns are stated.<\/p>\n
\u5728\u64b0\u5199\u672c\u4e66\u65f6\uff0c\u4f7f\u7528\u4e86\u5b9e\u9645\u548c\u5177\u4f53\u7684\u4f8b\u5b50\u3002\u6bcf\u4e2a\u8bbe\u8ba1\u6a21\u5f0f\u90fd\u4ee5\u4e00\u4e2a\u7b80\u77ed\u7684\u63cf\u8ff0\u6027\u53e5\u5b50\u5f00\u5934\uff0c\u7136\u540e\u4f5c\u4e3a\u5177\u4f53\u573a\u666f\u8fdb\u884c\u89e3\u91ca\u3002\u6700\u540e\uff0c\u9648\u8ff0\u4e86\u6bcf\u79cd\u8bbe\u8ba1\u6a21\u5f0f\u7684\u5173\u952e\u70b9\u3001\u4f18\u70b9\u3001\u7f3a\u70b9\u3001\u9002\u7528\u6027\u548c\u76f8\u5173\u6a21\u5f0f\u3002<\/p>\n
This book is divided into 15 chapters, including:<\/p>\n
\u672c\u4e66\u5206\u4e3a 15 \u7ae0\uff0c\u5305\u62ec\uff1a<\/p>\n
Chapter 1: Introduction to Design Patterns- In this chapter, an attempt has been made to explain why design patterns are important and their role in software architecture, and basically, what is the relationship between design patterns, software design problems, and software architecture? In this chapter, various topics such as Design Principles, including SOLID, KISS, DRY, etc., and Introduction to .NET and UML are covered too.
\n\u7b2c 1 \u7ae0\uff1a\u8bbe\u8ba1\u6a21\u5f0f\u7b80\u4ecb - \u5728\u672c\u7ae0\u4e2d\uff0c\u6211\u4eec\u8bd5\u56fe\u89e3\u91ca\u4e3a\u4ec0\u4e48\u8bbe\u8ba1\u6a21\u5f0f\u5f88\u91cd\u8981\u4ee5\u53ca\u5b83\u4eec\u5728\u8f6f\u4ef6\u67b6\u6784\u4e2d\u7684\u4f5c\u7528\uff0c\u57fa\u672c\u4e0a\uff0c\u8bbe\u8ba1\u6a21\u5f0f\u3001\u8f6f\u4ef6\u8bbe\u8ba1\u95ee\u9898\u548c\u8f6f\u4ef6\u67b6\u6784\u4e4b\u95f4\u7684\u5173\u7cfb\u662f\u4ec0\u4e48\uff1f\u5728\u672c\u7ae0\u4e2d\uff0c\u8fd8\u6db5\u76d6\u4e86\u5404\u79cd\u4e3b\u9898\uff0c\u4f8b\u5982\u8bbe\u8ba1\u539f\u5219\uff0c\u5305\u62ec SOLID\u3001KISS\u3001DRY \u7b49\uff0c\u4ee5\u53ca .NET \u548c UML \u7b80\u4ecb\u3002<\/p>\n
Chapter 2: Creational Design Patterns- Creative design patterns, as the name suggests, deal with the construction of objects and how to create instances. In C# programming language, wherever an object is needed, the object can be created using the \u201cnew\u201d keyword along with the class name. However, there are situations where it is necessary to hide the way the object is made from the user's view. In this case, creative design patterns can be useful. In this chapter, creational design patterns, one of the types of GoF design patterns, have been introduced, and it has been said that these design patterns are useful for what issues.
\n\u7b2c 2 \u7ae0\uff1a\u521b\u9020\u6027\u8bbe\u8ba1\u6a21\u5f0f - \u987e\u540d\u601d\u4e49\uff0c\u521b\u610f\u8bbe\u8ba1\u6a21\u5f0f\u6d89\u53ca\u5bf9\u8c61\u7684\u6784\u9020\u4ee5\u53ca\u5982\u4f55\u521b\u5efa\u5b9e\u4f8b\u3002\u5728 C# \u7f16\u7a0b\u8bed\u8a00\u4e2d\uff0c\u53ea\u8981\u9700\u8981\u5bf9\u8c61\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528 \u201cnew\u201d \u5173\u952e\u5b57\u548c\u7c7b\u540d\u521b\u5efa\u5bf9\u8c61\u3002\u4f46\u662f\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u6709\u5fc5\u8981\u4ece\u7528\u6237\u7684\u89c6\u56fe\u4e2d\u9690\u85cf\u5bf9\u8c61\u7684\u521b\u5efa\u65b9\u5f0f\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u521b\u610f\u8bbe\u8ba1\u6a21\u5f0f\u53ef\u80fd\u5f88\u6709\u7528\u3002\u5728\u672c\u7ae0\u4e2d\uff0c\u4ecb\u7ecd\u4e86 GoF \u8bbe\u8ba1\u6a21\u5f0f\u7684\u4e00\u79cd\u521b\u5efa\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u5e76\u4e14\u636e\u8bf4\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5bf9\u54ea\u4e9b\u95ee\u9898\u5f88\u6709\u7528\u3002<\/p>\n
Chapter 3: Structural Design Patterns- Structural design patterns deal with the relationships between classes in the system. In fact, this category of design patterns determines how different objects can form a more complex structure together. In this chapter, structural design patterns, one of the types of GoF design patterns, have been introduced, and it has been said that these design patterns are useful for what issues.
\n\u7b2c 3 \u7ae0\uff1a\u7ed3\u6784\u8bbe\u8ba1\u6a21\u5f0f - \u7ed3\u6784\u8bbe\u8ba1\u6a21\u5f0f\u5904\u7406\u7cfb\u7edf\u4e2d\u7c7b\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\u4e8b\u5b9e\u4e0a\uff0c\u8fd9\u7c7b\u8bbe\u8ba1\u6a21\u5f0f\u51b3\u5b9a\u4e86\u4e0d\u540c\u7684\u5bf9\u8c61\u5982\u4f55\u4e00\u8d77\u5f62\u6210\u66f4\u590d\u6742\u7684\u7ed3\u6784\u3002\u5728\u672c\u7ae0\u4e2d\uff0c\u4ecb\u7ecd\u4e86 GoF \u8bbe\u8ba1\u6a21\u5f0f\u7684\u4e00\u79cd\u7ed3\u6784\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u636e\u8bf4\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5bf9\u4ec0\u4e48\u95ee\u9898\u5f88\u6709\u7528\u3002<\/p>\n
Chapter 4: Behavioral Design Patterns - Part I- This category of design patterns deals with the behavior of objects and classes. In fact, the main goal and focal point of this category of design patterns is to perform work between different objects using different methods and different algorithms. In fact, in this category of design patterns, not only objects and classes are discussed, but the relationship between them is also discussed. In this chapter, the most popular and famous behavioral design patterns, one of the types of GoF design patterns, have been introduced, and it has been said that these design patterns are useful for what issues.
\n\u7b2c 4 \u7ae0\uff1a\u884c\u4e3a\u8bbe\u8ba1\u6a21\u5f0f \u2013 \u7b2c\u4e00\u90e8\u5206 - \u8fd9\u7c7b\u8bbe\u8ba1\u6a21\u5f0f\u6d89\u53ca\u5bf9\u8c61\u548c\u7c7b\u7684\u884c\u4e3a\u3002\u4e8b\u5b9e\u4e0a\uff0c\u8fd9\u7c7b\u8bbe\u8ba1\u6a21\u5f0f\u7684\u4e3b\u8981\u76ee\u6807\u548c\u7126\u70b9\u662f\u4f7f\u7528\u4e0d\u540c\u65b9\u6cd5\u548c\u4e0d\u540c\u7b97\u6cd5\u5728\u4e0d\u540c\u5bf9\u8c61\u4e4b\u95f4\u6267\u884c\u5de5\u4f5c\u3002\u4e8b\u5b9e\u4e0a\uff0c\u5728\u8fd9\u7c7b\u8bbe\u8ba1\u6a21\u5f0f\u4e2d\uff0c\u4e0d\u4ec5\u8ba8\u8bba\u4e86\u5bf9\u8c61\u548c\u7c7b\uff0c\u8fd8\u8ba8\u8bba\u4e86\u5b83\u4eec\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\u5728\u672c\u7ae0\u4e2d\uff0c\u4ecb\u7ecd\u4e86\u6700\u6d41\u884c\u548c\u6700\u8457\u540d\u7684\u884c\u4e3a\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u8fd9\u662f GoF \u8bbe\u8ba1\u6a21\u5f0f\u7684\u4e00\u79cd\uff0c\u636e\u8bf4\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5bf9\u4ec0\u4e48\u95ee\u9898\u5f88\u6709\u7528\u3002<\/p>\n
Chapter 5: Behavioral Design Patterns - Part II- In continuation of the previous chapter, in this chapter, more complex and less used behavioral design patterns are discussed, and it is shown how these design patterns can be useful in dealing with the behavior of objects and classes. Although these patterns are less known or less used, their use can make much more complex problems be solved in a very simple way. In this chapter, less popular or famous behavioral design patterns, one of the types of GoF design patterns, have been introduced, and it has been said that these design patterns are useful for what issues.
\n\u7b2c 5 \u7ae0\uff1a\u884c\u4e3a\u8bbe\u8ba1\u6a21\u5f0f \u2013 \u7b2c\u4e8c\u90e8\u5206 - \u5728\u4e0a\u4e00\u7ae0\u7684\u5ef6\u7eed\u4e2d\uff0c\u672c\u7ae0\u8ba8\u8bba\u4e86\u66f4\u590d\u6742\u548c\u8f83\u5c11\u4f7f\u7528\u7684\u884c\u4e3a\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u5e76\u5c55\u793a\u4e86\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5982\u4f55\u7528\u4e8e\u5904\u7406\u5bf9\u8c61\u548c\u7c7b\u7684\u884c\u4e3a\u3002\u5c3d\u7ba1\u8fd9\u4e9b\u6a21\u5f0f\u9c9c\u4e3a\u4eba\u77e5\u6216\u8f83\u5c11\u4f7f\u7528\uff0c\u4f46\u5b83\u4eec\u7684\u4f7f\u7528\u53ef\u4ee5\u4ee5\u975e\u5e38\u7b80\u5355\u7684\u65b9\u5f0f\u89e3\u51b3\u66f4\u590d\u6742\u7684\u95ee\u9898\u3002\u5728\u672c\u7ae0\u4e2d\uff0c\u4ecb\u7ecd\u4e86\u4e0d\u592a\u6d41\u884c\u6216\u4e0d\u592a\u8457\u540d\u7684\u884c\u4e3a\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u8fd9\u662f GoF \u8bbe\u8ba1\u6a21\u5f0f\u7684\u4e00\u79cd\u7c7b\u578b\uff0c\u636e\u8bf4\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5bf9\u4ec0\u4e48\u95ee\u9898\u5f88\u6709\u7528\u3002<\/p>\n
Chapter 6: Domain Logic Design Patterns- To organize domain logic, Domain Logic design patterns can be used. The choice of which design pattern to use depends on the level of logical complexity that we want to implement. The important thing here is to understand when logic is complex and when it is not! Understanding this point is not an easy task, but by using domain experts, or more experienced people, it is possible to obtain a better approximation. In this chapter, it is said how to organize the logic of the domain. And in this way, what are the design patterns that help us have a more appropriate and better design? These design patterns are among the PoEAA design patterns.
\n\u7b2c 6 \u7ae0\uff1a\u57df\u903b\u8f91\u8bbe\u8ba1\u6a21\u5f0f - \u4e3a\u4e86\u7ec4\u7ec7\u57df\u903b\u8f91\uff0c\u53ef\u4ee5\u4f7f\u7528\u57df\u903b\u8f91\u8bbe\u8ba1\u6a21\u5f0f\u3002\u9009\u62e9\u4f7f\u7528\u54ea\u79cd\u8bbe\u8ba1\u6a21\u5f0f\u53d6\u51b3\u4e8e\u6211\u4eec\u60f3\u8981\u5b9e\u73b0\u7684\u903b\u8f91\u590d\u6742\u7a0b\u5ea6\u3002\u8fd9\u91cc\u91cd\u8981\u7684\u662f\u4e86\u89e3\u903b\u8f91\u4f55\u65f6\u590d\u6742\uff0c\u4f55\u65f6\u4e0d\u590d\u6742\uff01\u7406\u89e3\u8fd9\u4e00\u70b9\u5e76\u975e\u6613\u4e8b\uff0c\u4f46\u901a\u8fc7\u4f7f\u7528\u9886\u57df\u4e13\u5bb6\u6216\u66f4\u6709\u7ecf\u9a8c\u7684\u4eba\uff0c\u53ef\u4ee5\u83b7\u5f97\u66f4\u597d\u7684\u8fd1\u4f3c\u503c\u3002\u5728\u672c\u7ae0\u4e2d\uff0c\u5c06\u4ecb\u7ecd\u5982\u4f55\u7ec4\u7ec7\u57df\u7684\u903b\u8f91\u3002\u800c\u8fd9\u6837\u4e00\u6765\uff0c\u6709\u54ea\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u6709\u4e00\u4e2a\u66f4\u5408\u9002\u3001\u66f4\u597d\u7684\u8bbe\u8ba1\u5462\uff1f\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5c5e\u4e8e PoEAA \u8bbe\u8ba1\u6a21\u5f0f\u3002<\/p>\n
Chapter 7: Data Source Architectural Design Patterns- One of the challenges of designing the data access layer is to implement how to communicate with the data source. In this implementation, it is necessary to address issues such as how to categorize SQL codes, how to manage the complexities of communicating with the data of each domain, and the mismatch between the database structure and the domain model. In this chapter, it has been said that in software architecture, communication with data sources can be considered and implemented in a suitable way. These design patterns are among the PoEAA design patterns.
\n\u7b2c 7 \u7ae0\uff1a\u6570\u636e\u6e90\u67b6\u6784\u8bbe\u8ba1\u6a21\u5f0f - \u8bbe\u8ba1\u6570\u636e\u8bbf\u95ee\u5c42\u7684\u6311\u6218\u4e4b\u4e00\u662f\u5b9e\u73b0\u5982\u4f55\u4e0e\u6570\u636e\u6e90\u901a\u4fe1\u3002\u5728\u6b64\u5b9e\u73b0\u4e2d\uff0c\u6709\u5fc5\u8981\u89e3\u51b3\u8bf8\u5982\u5982\u4f55\u5bf9 SQL \u4ee3\u7801\u8fdb\u884c\u5206\u7c7b\u3001\u5982\u4f55\u7ba1\u7406\u4e0e\u6bcf\u4e2a\u57df\u7684\u6570\u636e\u8fdb\u884c\u901a\u4fe1\u7684\u590d\u6742\u6027\u4ee5\u53ca\u6570\u636e\u5e93\u7ed3\u6784\u548c\u57df\u6a21\u578b\u4e4b\u95f4\u7684\u4e0d\u5339\u914d\u7b49\u95ee\u9898\u3002\u5728\u672c\u7ae0\u4e2d\uff0c\u5df2\u7ecf\u8bf4\u8fc7\u5728\u8f6f\u4ef6\u67b6\u6784\u4e2d\uff0c\u53ef\u4ee5\u8003\u8651\u5e76\u4ee5\u9002\u5f53\u7684\u65b9\u5f0f\u5b9e\u73b0\u4e0e\u6570\u636e\u6e90\u7684\u901a\u4fe1\u3002\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5c5e\u4e8e PoEAA \u8bbe\u8ba1\u6a21\u5f0f\u3002<\/p>\n
Chapter 8: Object-Relational Behaviors Design Patterns- Among the other challenges that exist when communicating with the database is paying attention to behaviors. What is meant by behaviors is how the data should be fetched from the database or how it should be stored in it. For example, suppose a lot of data is fetched from the database, and some of them have changed. It will be very important to answer the question of which of the data has changed or how to store the changes again in the database, provided that the data consistency is not disturbed. Another challenge is that when the Domain Model is used, most of the models have relationships with other models, and reading a model will lead to fetching all its relationships, which will again jeopardize the efficiency. In this chapter, an attempt has been made to explain how to connect business to data sources in a proper way. These design patterns are among the PoEAA design patterns.
\n\u7b2c 8 \u7ae0\uff1a\u5bf9\u8c61\u5173\u7cfb\u884c\u4e3a\u8bbe\u8ba1\u6a21\u5f0f - \u4e0e\u6570\u636e\u5e93\u901a\u4fe1\u65f6\u5b58\u5728\u7684\u5176\u4ed6\u6311\u6218\u4e4b\u4e00\u662f\u5173\u6ce8\u884c\u4e3a\u3002\u884c\u4e3a\u7684\u542b\u4e49\u662f\u5e94\u8be5\u5982\u4f55\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u6570\u636e\u6216\u5e94\u8be5\u5982\u4f55\u5c06\u6570\u636e\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u4e86\u5927\u91cf\u6570\u636e\uff0c\u5176\u4e2d\u4e00\u4e9b\u6570\u636e\u5df2\u66f4\u6539\u3002\u56de\u7b54\u54ea\u4e9b\u6570\u636e\u5df2\u66f4\u6539\u6216\u5982\u4f55\u5c06\u66f4\u6539\u518d\u6b21\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\u7684\u95ee\u9898\u975e\u5e38\u91cd\u8981\uff0c\u524d\u63d0\u662f\u6570\u636e\u4e00\u81f4\u6027\u4e0d\u53d7\u5e72\u6270\u3002\u53e6\u4e00\u4e2a\u6311\u6218\u662f\uff0c\u5f53\u4f7f\u7528 Domain Model \u65f6\uff0c\u5927\u591a\u6570\u6a21\u578b\u90fd\u4e0e\u5176\u4ed6\u6a21\u578b\u6709\u5173\u7cfb\uff0c\u8bfb\u53d6\u4e00\u4e2a\u6a21\u578b\u4f1a\u5bfc\u81f4\u83b7\u53d6\u5b83\u7684\u6240\u6709\u5173\u7cfb\uff0c\u8fd9\u5c06\u518d\u6b21\u5371\u53ca\u6548\u7387\u3002\u5728\u672c\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c1d\u8bd5\u89e3\u91ca\u5982\u4f55\u4ee5\u9002\u5f53\u7684\u65b9\u5f0f\u5c06\u4e1a\u52a1\u8fde\u63a5\u5230\u6570\u636e\u6e90\u3002\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5c5e\u4e8e PoEAA \u8bbe\u8ba1\u6a21\u5f0f\u3002<\/p>\n
Chapter 9: Object-Relational Structures Design Patterns- Another challenge in mapping the domain to the database is how to map a record in the database to an object. The next challenge is how to implement all types of relationships, including one-to-one, one-to-many and many-to-many relationships. In the meantime, we may face some data that cannot and should not be mapped to any table, and we should think about this problem in our design. Finally, to implement the structure of the database, relationships such as inheritance may be used. In this case, it should be determined how this type of implementation should be mapped to the tables in the database. In this chapter, an attempt has been made to explain how to implement the data source structure in the software. These design patterns are among the PoEAA design patterns.
\n\u7b2c 9 \u7ae0\uff1a\u5bf9\u8c61\u5173\u7cfb\u7ed3\u6784\u8bbe\u8ba1\u6a21\u5f0f - \u5c06\u57df\u6620\u5c04\u5230\u6570\u636e\u5e93\u7684\u53e6\u4e00\u4e2a\u6311\u6218\u662f\u5982\u4f55\u5c06\u6570\u636e\u5e93\u4e2d\u7684\u8bb0\u5f55\u6620\u5c04\u5230\u5bf9\u8c61\u3002\u4e0b\u4e00\u4e2a\u6311\u6218\u662f\u5982\u4f55\u5b9e\u73b0\u6240\u6709\u7c7b\u578b\u7684\u5173\u7cfb\uff0c\u5305\u62ec 1 \u5bf9 1\u30011 \u5bf9\u591a\u548c many-to-many \u5173\u7cfb\u3002\u540c\u65f6\uff0c\u6211\u4eec\u53ef\u80fd\u4f1a\u9047\u5230\u4e00\u4e9b\u4e0d\u80fd\u4e5f\u4e0d\u5e94\u8be5\u6620\u5c04\u5230\u4efb\u4f55 table \u7684\u6570\u636e\uff0c\u6211\u4eec\u5e94\u8be5\u5728\u8bbe\u8ba1\u4e2d\u8003\u8651\u8fd9\u4e2a\u95ee\u9898\u3002\u6700\u540e\uff0c\u4e3a\u4e86\u5b9e\u73b0\u6570\u636e\u5e93\u7684\u7ed3\u6784\uff0c\u53ef\u4ee5\u4f7f\u7528\u7ee7\u627f\u7b49\u5173\u7cfb\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5e94\u786e\u5b9a\u5982\u4f55\u5c06\u8fd9\u79cd\u7c7b\u578b\u7684\u5b9e\u73b0\u6620\u5c04\u5230\u6570\u636e\u5e93\u4e2d\u7684\u8868\u3002\u5728\u672c\u7ae0\u4e2d\uff0c\u5c1d\u8bd5\u89e3\u91ca\u5982\u4f55\u5728\u8f6f\u4ef6\u4e2d\u5b9e\u73b0\u6570\u636e\u6e90\u7ed3\u6784\u3002\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5c5e\u4e8e PoEAA \u8bbe\u8ba1\u6a21\u5f0f\u3002<\/p>\n
Chapter 10: Object-Relational Metadata Mapping Design Patterns- When we are producing software, we need to implement the mapping between tables and classes. For the software production process, this will be a process that contains a significant amount of repetitive code, and this will increase the production time. So, it will be necessary to stop writing duplicate codes and extract relationships from metadata. When this challenge can be solved, then it will be possible to generate queries automatically. Finally, when it is possible to automatically extract queries, the database can be hidden from the rest of the program. This chapter describes how to store object metadata in the data source, as well as how to create and manage queries to the data source. These design patterns are among the PoEAA design patterns.
\n\u7b2c 10 \u7ae0\uff1a\u5bf9\u8c61\u5173\u7cfb\u5143\u6570\u636e\u6620\u5c04\u8bbe\u8ba1\u6a21\u5f0f - \u5f53\u6211\u4eec\u751f\u4ea7\u8f6f\u4ef6\u65f6\uff0c\u6211\u4eec\u9700\u8981\u5b9e\u73b0\u8868\u548c\u7c7b\u4e4b\u95f4\u7684\u6620\u5c04\u3002\u5bf9\u4e8e\u8f6f\u4ef6\u751f\u4ea7\u8fc7\u7a0b\uff0c\u8fd9\u5c06\u662f\u4e00\u4e2a\u5305\u542b\u5927\u91cf\u91cd\u590d\u4ee3\u7801\u7684\u8fc7\u7a0b\uff0c\u8fd9\u5c06\u589e\u52a0\u751f\u4ea7\u65f6\u95f4\u3002\u56e0\u6b64\uff0c\u6709\u5fc5\u8981\u505c\u6b62\u7f16\u5199\u91cd\u590d\u4ee3\u7801\u5e76\u4ece\u5143\u6570\u636e\u4e2d\u63d0\u53d6\u5173\u7cfb\u3002\u5f53\u8fd9\u4e2a\u6311\u6218\u53ef\u4ee5\u89e3\u51b3\u65f6\uff0c\u5c31\u53ef\u4ee5\u81ea\u52a8\u751f\u6210\u67e5\u8be2\u3002\u6700\u540e\uff0c\u5f53\u53ef\u4ee5\u81ea\u52a8\u63d0\u53d6\u67e5\u8be2\u65f6\uff0c\u6570\u636e\u5e93\u53ef\u4ee5\u5bf9\u7a0b\u5e8f\u7684\u5176\u4f59\u90e8\u5206\u9690\u85cf\u3002\u672c\u7ae0\u4ecb\u7ecd\u5982\u4f55\u5728\u6570\u636e\u6e90\u4e2d\u5b58\u50a8\u5bf9\u8c61\u5143\u6570\u636e\uff0c\u4ee5\u53ca\u5982\u4f55\u521b\u5efa\u548c\u7ba1\u7406\u5bf9\u6570\u636e\u6e90\u7684\u67e5\u8be2\u3002\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5c5e\u4e8e PoEAA \u8bbe\u8ba1\u6a21\u5f0f\u3002<\/p>\n
Chapter 11: Web Presentation Design Patterns- One of the most important changes in applications in recent years is the penetration of web-based user interfaces. These types of interfaces come with various advantages, including that the client often does not need to install a special program to use them. The creation of web applications is often accompanied by the generation of server-side codes. The request is entered into the web server, and then the web server delivers the request based on the content of the request to the web application or the corresponding website. To separate the details related to the view from the data structure and logic, you can benefit from the design patterns presented in this chapter. In this chapter, the creation and handling of user interface requests are discussed, and it is stated how you can prepare and implement the view and how you can manage the requests in a suitable way. These design patterns are among the PoEAA design patterns.
\n\u7b2c 11 \u7ae0\uff1aWeb \u8868\u793a\u8bbe\u8ba1\u6a21\u5f0f - \u8fd1\u5e74\u6765\u5e94\u7528\u7a0b\u5e8f\u6700\u91cd\u8981\u7684\u53d8\u5316\u4e4b\u4e00\u662f\u57fa\u4e8e Web \u7684\u7528\u6237\u754c\u9762\u7684\u6e17\u900f\u3002\u8fd9\u4e9b\u7c7b\u578b\u7684\u63a5\u53e3\u5177\u6709\u5404\u79cd\u4f18\u70b9\uff0c\u5305\u62ec\u5ba2\u6237\u7aef\u901a\u5e38\u4e0d\u9700\u8981\u5b89\u88c5\u7279\u6b8a\u7a0b\u5e8f\u5373\u53ef\u4f7f\u7528\u5b83\u4eec\u3002Web \u5e94\u7528\u7a0b\u5e8f\u7684\u521b\u5efa\u901a\u5e38\u4f34\u968f\u7740\u670d\u52a1\u5668\u7aef\u4ee3\u7801\u7684\u751f\u6210\u3002\u5c06\u8bf7\u6c42\u8f93\u5165\u5230 Web \u670d\u52a1\u5668\u4e2d\uff0c\u7136\u540e Web \u670d\u52a1\u5668\u6839\u636e\u8bf7\u6c42\u7684\u5185\u5bb9\u5c06\u8bf7\u6c42\u6295\u9012\u5230 Web \u5e94\u7528\u7a0b\u5e8f\u6216\u76f8\u5e94\u7684\u7f51\u7ad9\u3002\u8981\u5c06\u4e0e\u89c6\u56fe\u76f8\u5173\u7684\u7ec6\u8282\u4e0e\u6570\u636e\u7ed3\u6784\u548c\u903b\u8f91\u5206\u5f00\uff0c\u60a8\u53ef\u4ee5\u4ece\u672c\u7ae0\u4e2d\u4ecb\u7ecd\u7684\u8bbe\u8ba1\u6a21\u5f0f\u4e2d\u53d7\u76ca\u3002\u5728\u672c\u7ae0\u4e2d\uff0c\u8ba8\u8bba\u4e86\u7528\u6237\u754c\u9762\u8bf7\u6c42\u7684\u521b\u5efa\u548c\u5904\u7406\uff0c\u5e76\u8bf4\u660e\u4e86\u5982\u4f55\u51c6\u5907\u548c\u5b9e\u73b0\u89c6\u56fe\u4ee5\u53ca\u5982\u4f55\u4ee5\u9002\u5f53\u7684\u65b9\u5f0f\u7ba1\u7406\u8bf7\u6c42\u3002\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5c5e\u4e8e PoEAA \u8bbe\u8ba1\u6a21\u5f0f\u3002<\/p>\n
Chapter 12: Distribution Design Patterns- One of the problems of implementing communication between systems is observing the level of coarseness and fineness of communication. This level should be such that both the effectiveness and efficiency during the network are not disturbed, and the data structure delivered to the client is the structure that is expected and suitable for the client. In this chapter, design patterns that can be useful in building distributed software are discussed. These design patterns are among the PoEAA design patterns.
\n\u7b2c 12 \u7ae0\uff1a\u5206\u5e03\u8bbe\u8ba1\u6a21\u5f0f - \u5728\u7cfb\u7edf\u4e4b\u95f4\u5b9e\u73b0\u901a\u4fe1\u7684\u95ee\u9898\u4e4b\u4e00\u662f\u89c2\u5bdf\u901a\u4fe1\u7684\u7c97\u7565\u7a0b\u5ea6\u548c\u7cbe\u7ec6\u5ea6\u3002\u8fd9\u4e2a\u7ea7\u522b\u5e94\u8be5\u662f\u8fd9\u6837\u7684\uff0c\u7f51\u7edc\u671f\u95f4\u7684\u6709\u6548\u6027\u548c\u6548\u7387\u90fd\u4e0d\u4f1a\u53d7\u5230\u5e72\u6270\uff0c\u5e76\u4e14\u4ea4\u4ed8\u7ed9\u5ba2\u6237\u7aef\u7684\u6570\u636e\u7ed3\u6784\u662f\u5ba2\u6237\u9884\u671f\u548c\u9002\u5408\u7684\u7ed3\u6784\u3002\u672c\u7ae0\u8ba8\u8bba\u4e86\u5728\u6784\u5efa\u5206\u5e03\u5f0f\u8f6f\u4ef6\u65f6\u6709\u7528\u7684\u8bbe\u8ba1\u6a21\u5f0f\u3002\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5c5e\u4e8e PoEAA \u8bbe\u8ba1\u6a21\u5f0f\u3002<\/p>\n
Chapter 13: Offline Concurrency Design Patterns- One of the most complicated parts of software production is dealing with topics related to concurrency. Whenever several threads or processes have access to the same data, there is a possibility of problems related to concurrency, so one should think about concurrency in software production. Of course, there are different solutions at different levels for working and managing concurrency in enterprise software applications. For example, you can use transactions, internal features of relational databases, etc., for this purpose. Of course, this reason is not proof of the claim that concurrency management can basically be blamed on these methods and tools. In this chapter, design patterns that can be useful in solving these problems have been introduced. These design patterns are among the PoEAA design patterns.
\n\u7b2c 13 \u7ae0\uff1a\u79bb\u7ebf\u5e76\u53d1\u8bbe\u8ba1\u6a21\u5f0f - \u8f6f\u4ef6\u751f\u4ea7\u4e2d\u6700\u590d\u6742\u7684\u90e8\u5206\u4e4b\u4e00\u662f\u5904\u7406\u4e0e\u5e76\u53d1\u76f8\u5173\u7684\u4e3b\u9898\u3002\u6bcf\u5f53\u591a\u4e2a\u7ebf\u7a0b\u6216\u8fdb\u7a0b\u53ef\u4ee5\u8bbf\u95ee\u76f8\u540c\u7684\u6570\u636e\u65f6\uff0c\u5c31\u53ef\u80fd\u5b58\u5728\u4e0e\u5e76\u53d1\u76f8\u5173\u7684\u95ee\u9898\uff0c\u56e0\u6b64\u5e94\u8be5\u8003\u8651\u8f6f\u4ef6\u751f\u4ea7\u4e2d\u7684\u5e76\u53d1\u6027\u3002\u5f53\u7136\uff0c\u5728\u4f01\u4e1a\u8f6f\u4ef6\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5de5\u4f5c\u548c\u7ba1\u7406\u5e76\u53d1\u5728\u4e0d\u540c\u7ea7\u522b\u6709\u4e0d\u540c\u7684\u89e3\u51b3\u65b9\u6848\u3002\u4f8b\u5982\uff0c\u4e3a\u6b64\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4e8b\u52a1\u3001\u5173\u7cfb\u6570\u636e\u5e93\u7684\u5185\u90e8\u529f\u80fd\u7b49\u3002\u5f53\u7136\uff0c\u8fd9\u4e2a\u539f\u56e0\u5e76\u4e0d\u80fd\u8bc1\u660e\u5e76\u53d1\u7ba1\u7406\u57fa\u672c\u4e0a\u53ef\u4ee5\u5f52\u548e\u4e8e\u8fd9\u4e9b\u65b9\u6cd5\u548c\u5de5\u5177\u7684\u8bf4\u6cd5\u3002\u672c\u7ae0\u4ecb\u7ecd\u4e86\u53ef\u7528\u4e8e\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\u7684\u8bbe\u8ba1\u6a21\u5f0f\u3002\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5c5e\u4e8e PoEAA \u8bbe\u8ba1\u6a21\u5f0f\u3002<\/p>\n
Chapter 14: Session State Design Patterns- When we talk about transactions, we often talk about system transactions and business transactions. This discussion continues to the discussion of stateless or stateless sessions. Obviously, first, it should be determined what is meant by Stateful or Stateless. When we look at an object, this object consists of a series of data (status) and a series of behaviors. If we assume that the object does not contain any data, then we have accepted that the object in question does not have any data with it. If we bring this discussion to enterprise software, the meaning of Stateless will be a state in which the server does not keep any data of the request between two requests. If the server needs to store data between two requests, then we will face stateful mode. This chapter talks about how to manage user sessions. Some points have been raised regarding stateless and stateful sessions. These design patterns are among the PoEAA design patterns.
\n\u7b2c 14 \u7ae0\uff1a\u4f1a\u8bdd\u72b6\u6001\u8bbe\u8ba1\u6a21\u5f0f - \u5f53\u6211\u4eec\u8c08\u8bba\u4e8b\u52a1\u65f6\uff0c\u6211\u4eec\u7ecf\u5e38\u8c08\u8bba\u7cfb\u7edf\u4e8b\u52a1\u548c\u4e1a\u52a1\u4e8b\u52a1\u3002\u6b64\u8ba8\u8bba\u5c06\u7ee7\u7eed\u8ba8\u8bba stateless \u6216 stateless \u4f1a\u8bdd\u3002\u663e\u7136\uff0c\u9996\u5148\uff0c\u5e94\u8be5\u786e\u5b9a Stateful \u6216 Stateless \u7684\u542b\u4e49\u3002\u5f53\u6211\u4eec\u67e5\u770b\u4e00\u4e2a\u5bf9\u8c61\u65f6\uff0c\u8fd9\u4e2a\u5bf9\u8c61\u7531\u4e00\u7cfb\u5217\u6570\u636e \uff08status\uff09 \u548c\u4e00\u7cfb\u5217 Behavior \u7ec4\u6210\u3002\u5982\u679c\u6211\u4eec\u5047\u8bbe\u8be5\u5bf9\u8c61\u4e0d\u5305\u542b\u4efb\u4f55\u6570\u636e\uff0c\u5219\u6211\u4eec\u5df2\u63a5\u53d7\u8be5\u5bf9\u8c61\u4e0d\u5305\u542b\u4efb\u4f55\u6570\u636e\u3002\u5982\u679c\u6211\u4eec\u628a\u8fd9\u4e2a\u8ba8\u8bba\u5e26\u5230\u4f01\u4e1a\u8f6f\u4ef6\u4e0a\uff0cStateless \u7684\u542b\u4e49\u5c06\u662f\u670d\u52a1\u5668\u5728\u4e24\u4e2a\u8bf7\u6c42\u4e4b\u95f4\u4e0d\u4fdd\u7559\u8bf7\u6c42\u7684\u4efb\u4f55\u6570\u636e\u7684\u72b6\u6001\u3002\u5982\u679c\u670d\u52a1\u5668\u9700\u8981\u5728\u4e24\u4e2a\u8bf7\u6c42\u4e4b\u95f4\u5b58\u50a8\u6570\u636e\uff0c\u90a3\u4e48\u6211\u4eec\u5c06\u9762\u4e34 Stateful \u6a21\u5f0f\u3002\u672c\u7ae0\u8ba8\u8bba\u5982\u4f55\u7ba1\u7406\u7528\u6237\u4f1a\u8bdd\u3002\u5df2\u7ecf\u63d0\u51fa\u4e86\u4e00\u4e9b\u5173\u4e8e\u65e0\u72b6\u6001\u548c\u6709\u72b6\u6001\u4f1a\u8bdd\u7684\u89c2\u70b9\u3002\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5c5e\u4e8e PoEAA \u8bbe\u8ba1\u6a21\u5f0f\u3002<\/p>\n
Chapter 15: Base Design Patterns- When we are designing software, we need to use different design patterns. To use these patterns, it is also necessary to use a series of basic design patterns to finally provide a suitable and better design. In fact, basic design patterns provide the foundation for designing and using other patterns. In this chapter, a series of basic design patterns have been introduced, and it has been shown how the use of these design patterns can be effective on the use of other design patterns. These design patterns are among the PoEAA design patterns.
\n\u7b2c 15 \u7ae0\uff1a\u57fa\u672c\u8bbe\u8ba1\u6a21\u5f0f - \u5f53\u6211\u4eec\u8bbe\u8ba1\u8f6f\u4ef6\u65f6\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u4e0d\u540c\u7684\u8bbe\u8ba1\u6a21\u5f0f\u3002\u8981\u4f7f\u7528\u8fd9\u4e9b\u6a21\u5f0f\uff0c\u8fd8\u9700\u8981\u4f7f\u7528\u4e00\u7cfb\u5217\u57fa\u672c\u7684\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u4ee5\u6700\u7ec8\u63d0\u4f9b\u5408\u9002\u4e14\u66f4\u597d\u7684\u8bbe\u8ba1\u3002\u4e8b\u5b9e\u4e0a\uff0c\u57fa\u672c\u8bbe\u8ba1\u6a21\u5f0f\u4e3a\u8bbe\u8ba1\u548c\u4f7f\u7528\u5176\u4ed6\u6a21\u5f0f\u63d0\u4f9b\u4e86\u57fa\u7840\u3002\u5728\u672c\u7ae0\u4e2d\uff0c\u4ecb\u7ecd\u4e86\u4e00\u7cfb\u5217\u57fa\u672c\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u5e76\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u6765\u6709\u6548\u5730\u4f7f\u7528\u5176\u4ed6\u8bbe\u8ba1\u6a21\u5f0f\u3002\u8fd9\u4e9b\u8bbe\u8ba1\u6a21\u5f0f\u5c5e\u4e8e PoEAA \u8bbe\u8ba1\u6a21\u5f0f\u3002<\/p>\n
\u4ee3\u7801\u5305\u548c\u5f69\u8272\u56fe\u50cf<\/p>\n
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