Clean Architecture: A Craftsman's Guide to Software Structure and Design (Robert C. Martin Series) 1st Edition, Kindle Edition
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Practical Software Architecture Solutions from the Legendary Robert C. Martin (“Uncle Bob”)
By applying universal rules of software architecture, you can dramatically improve developer productivity throughout the life of any software system. Now, building upon the success of his best-selling books Clean Code and The Clean Coder, legendary software craftsman Robert C. Martin (“Uncle Bob”) reveals those rules and helps you apply them.
Martin’s Clean Architecture doesn’t merely present options. Drawing on over a half-century of experience in software environments of every imaginable type, Martin tells you what choices to make and why they are critical to your success. As you’ve come to expect from Uncle Bob, this book is packed with direct, no-nonsense solutions for the real challenges you’ll face–the ones that will make or break your projects.
- Learn what software architects need to achieve–and core disciplines and practices for achieving it
- Master essential software design principles for addressing function, component separation, and data management
- See how programming paradigms impose discipline by restricting what developers can do
- Understand what’s critically important and what’s merely a “detail”
- Implement optimal, high-level structures for web, database, thick-client, console, and embedded applications
- Define appropriate boundaries and layers, and organize components and services
- See why designs and architectures go wrong, and how to prevent (or fix) these failures
Clean Architecture is essential reading for every current or aspiring software architect, systems analyst, system designer, and software manager–and for every programmer who must execute someone else’s designs.
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From the Publisher
|Best agile practices of cleaning code “on the fly” Software Craftsmanship||Endure and succeed amidst swirling uncertainty and nonstop pressure||Deliver robust, effective code and to be proud of all the software you write||There are no shortcuts for Agile’s true benefits: You need to do Agile right.||Direct, no-nonsense answers to key architecture and design questions|
|Title||Clean Code||The Clean Coder||Clean Craftsmanship||Clean Agile||Clean Architecture|
|Core Concept||Presents the principles, patterns, and practices of writing clean code and challenges programmers to closely read code, discovering what’s right and what’s wrong with it.||Provides practical guidance on how to approach software development and work well and clean with a software team.||Picks up where Clean Code leaves off, outlining additional ways to write quality and trusted code you can be proud of every day.||A clear and concise guide to basic Agile values and principles. Perfect for those new to Agile methods and long-time developers who want to simplify approaches for the better.||Brings the methods and tactics of “clean coding” to system design.|
|Endoresement||"It is the best pragmatic application of Lean principles to software I have ever seen in print." —James O. Coplien, Founder of the Pasteur Organizational Patterns project||“Some technical books inspire and teach; some delight and amuse. Rarely does a technical book do all four of these things.”—George Bullock Senior Program Manager Microsoft Corp.||". . . [A] timely and humble reminder of the ever-increasing complexity of our programmatic world and how we owe it to the legacy of humankind--and to ourselves--to practice ethical development.” -- Stacia Heimgartner Viscardi, CST & Agile Mentor||“What is in the world of Agile development is nothing compared to what could be. This book is Bob’s perspective on what to focus on to get to that ‘what could be.’ And he’s been there, so it’s worth listening.” –Kent Beck||"A good architecture comes from understanding it more as a journey than as a destination, more as an ongoing process of enquiry than as a frozen artifact." -- Kevlin Henney|
About the Author
- ASIN : B075LRM681
- Publisher : Pearson; 1st edition (September 12, 2017)
- Publication date : September 12, 2017
- Language : English
- File size : 9675 KB
- Simultaneous device usage : Up to 5 simultaneous devices, per publisher limits
- Text-to-Speech : Enabled
- Screen Reader : Supported
- Enhanced typesetting : Enabled
- X-Ray : Not Enabled
- Word Wise : Enabled
- Print length : 431 pages
- Page numbers source ISBN : 0134494164
- Lending : Not Enabled
- Best Sellers Rank: #27,996 in Kindle Store (See Top 100 in Kindle Store)
- Customer Reviews:
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The book starts with 3 myths we developers live in:
1. Myth: We just need to get to market first and we clean it up later.
2. Myth: Messy code makes us faster today and slows us later. Myth: We can switch mode from making messes to cleaning messes. (making messes is always slower, even in very short term as shown in example of a simple kata in the book)
3. Myth: Starting from scratch is a solution.
There is a well written history lesson in the next part. Uncle Bob presents Structured Programming, OOP and Functional Programming and says there is nothing else (programming paradigm-wise) to be invented. Part 3 is about SOLID principles from architecture point of view and part 4 are his Component Principles about component cohesion and coupling from his Agile Software Development book.
Part 5 is about Architecture and was the most interesting to read. Most memorable chapters for me were the Screaming Architecture and the Clean Architecture. Both of them are not new, you could have seen them in his videos or the article from 8thlight. The point of Screaming Architecture is that when a new developer joins a health-care project, he should be able to immediately tell "this is a health-care project" just from the project structure. Another topic which was part of multiple chapters, are micro-services. I felt that Robert Martin is not very fond of starting with them. He says services are little more than expensive function calls and as a communication mechanism between the project boundaries (i.e. a detail), they are a decision which should be deffered as far as possible.
Part 6, the Details, are a detailed explanations of his article Clean Architecture from 2012. There is a little gem in there, the Missing Chapter 34 written by Simon Brown. I liked his explanation of 4 different kinds of packaging classes together to form components.
Most of first one third of the book provides overview of programming paradigms such as structured design, object oriented, and functional decomposition. He then covers SOLID principles that he is best known for, i.e. single responsibility principle (SRP), open-close principle, liskov substitution principle, interface separation principle (ISP) and dependency inversion principle. In my opinion, these principles can be boiled down to interface/implementation separation and using composition over inheritance (concrete). He then applies these principles to components design such as reuse/release equivalence principle for releasing same component together, common closure principle similar to SRP and common reuse principle for using interfaces similar to ISP. Uncle Bob provides useful advice for using acyclic dependency principle for dependencies between components and ensuring that abstract/interfaces are used in stable components and volatile components (concrete implementation) should depend on stable components and not otherwise.
The last one quarter of the book finally starts with explanation on clean architecture that uses hexagonal architecture. He states that architecture should be independent of frameworks, UI and database. His definition of architecture only focuses on component design and communication but I use architecture as any design decision that is costly to change and often that include choice of databases, frameworks and UI. He uses layers and boundaries to divide system into various components and recommends use of entities for business policies, using techniques such as humble object pattern for testing hard to test components. In final chapters, he proposed designing components based on use cases instead of horizontal, which has worked better in my experience when working on a large system.
In the end, this book has plenty of nuggets on design of components but take this advice with a grain of salt. Uncle Bob’s militant views on clean design, test driven development and his abhorrence for tools is not very pragmatic. For example, he doesn’t mention technical debt, refactoring or dealing with legacy systems. Though, he pays attention to maintainability but he ignores most of other non functional requirements such as scalability, availability, reliability and ignores emphasis on developer productivity. In my experience, software design and development should start with the business requirements, constraints and organization structure. You may be working in a startup that needs to prove an idea with minimal effort or you may be working on designing a service with a large number of users. Similarly, you may be working with a small team or on a large project that needs to interact with a number of teams where you may need to apply Conway’s law to design the system. In real world, you face these choices instead of writing perfect components with 100% test coverage, which may be maintainable but not useful to anyone and thus killing your company and leaving you without work.
I would divide the book in two halves. The first of these hardly bears any relevance at all - it's mostly anecdotes and stuff that (in my opinion) doesn't really need to be in a book about architecture, particularly so if you already have any knowledge of design patterns. (Seriously, why bother explaining structured, object-oriented and functional programming?) The second half is where you'd expect the meaty content to be, but at the end of the day most of it can't be summarized in a simple sentence: don't do coupling. Don't do coupling in your database, don't do coupling in your services, don't do coupling in your web frontend... and a chapter for every single place where you want to avoid coupling.
To be fair, there is a couple of gems and useful pieces of information scattered across the book, but even in these cases, many of them were underexplained. Too much attention is paid to unimportant topics and too little to the points I found the most relevant.
It is rather sad that the only chapter that I found useful from start to end is called "The Missing Chapter". Perhaps the name is indicative of the fact of how difficult it is to fit a single useful chapter into a otherwise mostly pointless book.
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At the end there is a 50-pages appendix where Robert Martin describes many of the projects he worked on, from the early 1970s to the 1990s. Many of the problems from those projects are interesting case studies that you can learn from - I quite enjoyed reading those stories (somewhat to my own surprise).
This book is nothing than an over verbose description of the SOLID principles.
You have to admire the author though. Converting a 2 pages document into a 300+ book require skills rarely seen outside politics
Die ersten Kapitel waren wirklich sehr dünn, als Quereinsteiger eventuell hilfreich aber zum Großteil allgemein bekannte Dinge.
Ab dem Kapitel "Clean Architecture" geht es dann wirklich los. Es wird viel über Boundaries gesprochen und häufig wiederholt, dass man Designentscheidungen möglichst vermeidet und alle Optionen offen lässt. Das ist ein guter Rat, hat aber mit Software Architektur nicht besonders viel zu tun, denn diese Endscheidungen zu treffen ist ja genau der Punkt. Es bleibt auch alles wenig konkret. Die Kernaussage ist, dass man sich seine Businesslogik frei von Abhängigkeiten halten soll und das wird auch mit trivialen Beispielen gezeigt. Leider ist die Welt nicht so trivial und auch die Case Study gibt keine konkreten Tipps.
Ja die Dinge, die angesprochen werden, kann man so unterschreiben, aber der große Erkenntnisgewinn bleibt aus. Letztlich keine Kaufempfehlung, da gibt es bessere Bücher. Beispielsweise Game Engine Architecture, was zwar auf die Spieleentwicklung abzielt aber auch für andere Bereiche interessant ist. Hier geht es es ins Detail und die konkrete Umsetzung.
1.1: x-axis not defined, y-axis no measure,
1.2 x-axis not defined, title is Productivity over the same period of time. What do you mean ‘same period’? The previous chart had no title of x-axis that mentioned ‘time’.
1.3 x-axis is named ‘Major release’, the title is Cost per line of code over time (is it ‘Major release’ or is it ‘time’?), Y-axis: no unit.
1.4 x-axis: no mentioning. Y-axis not defined.
How sloppy can you be? Is there no editor involved?
I quite enjoyed reading it, which is rare with technical books.
I think it is very good for someone that has some idea of clean code, design patterns and software architecture principles already and wants to understand where these ideas come from and how they fit together.