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Preface
Carrying the author's high hopes, the Nuggets popular booklet of the same name "Spring Boot Source Code Interpretation and Principle Analysis" is officially published!
The predecessor of this book is the top-selling booklet in the Nuggets community - "Spring
Boot Source Code Interpretation and Principle Analysis". More than 3,600 developers in the entire community have chosen this booklet, making it the leading booklet in the Nuggets community. The trump card Spring tutorial is very good!
This booklet has made the author ranked in the Top 40 of the 2020 Popularity List, and he has been awarded 8 medals of honor. The sales volume on the site is far ahead. Readers call it a conscientious work, and they like and call it.
However, due to the limited volume and length of the booklet, readers have expressed that they are still unfinished and would like more useful information. They hope that the author can explain it in more detail and thoroughness.
No, the book with the same name comes right away, with richer and more substantial content than the booklet.
If you want to have a relativeReasonable, smooth, systematicThis book is perfect for your learning experience.
Preferred reading for improving Spring Boot
Spring Boot 1.0.0 has been released as early as 2014, but it has reached the stage of promoting "Reduce costs and increase efficiency"Today, Spring Boot has attracted the attention of more and more enterprises.
For this technology that has been born for 8 years, the authorLinkedBearIt can be regarded as Spring BootHardcore researcher。
He is a senior Java engineer who focuses on researching and sharing underlying technologies. He has served as a backend developer and technical leader in many companies. He also served as a back-end engineer at Inspur Group.
In fact, he began his intensive research on Spring Boot many years ago. After years of painstaking study, he has formed an understanding ofFrameworks such as Spring and Spring BootUnique insights, rich practical experience in framework systems and architecture encapsulation experience.
Therefore, it was a natural choice for him to write this book.
In 2019, LinkedBear settled in the Nuggets community in a low-key manner and began "crazy output" of booklet content. In just three years, he has published five pamphlets in the community, making him a truly prolific writer. Four of the booklets are related to Spring technology, "Spring Boot source code interpretation and principle analysis》 is the top-selling book in the Spring Boot direction.
In practice, LinkedBear deeply feels that although the number of Spring Boot users is increasing day by day, there are not many people who know the principles behind it, and even fewer people can go deep into the source code and explore the bottom layer of the source code.
In fact, Spring Boot itself has a powerful and clever design, and it contains design ideas that many developers and users are eager to learn. By studying
the source code and underlying design of Spring Boot and Spring Framework, I believe that developers can take their capabilities to a higher level.
He also observed that there are three main obstacles that prevent developers from learning deeply.
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The cost of reading source code is high: it is difficult, time-consuming and labor-intensive, and the input-output ratio is too low.
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The research threshold is high: the underlying source code of the framework is too complex.
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Learning is not systematic: Most of the information on the Internet is messy and it is difficult to sort out the ideas on your own.
Based on the pain points of developers and feedback from readers of the Nuggets booklet, LinkedBear spent two and a half years summarizing the research and understanding of Spring Boot and Spring Framework, and finally formed this book.
"Small book" becomes "big book", thoroughly understand Spring Boot
When designing the content, he tried his best to systematically organize the core principles in the framework to reduce the difficulty of reading and understanding, hoping to take into account developers who have already begun to explore and are preparing to learn the principles of Spring Boot.
I believe that after reading this book, you will be able to understand the principles from the bottom level and then re-understand the familiar Spring in front of you.
Although the author has tried his best to take care of various reader groups, Xiaoyi still wants to give a friendly reminder: this book is not an introductory book to Spring Boot!
Readers need to at least understand Spring Boot and Spring Framework and have basic experience in using them. It would be better if you have a certain grasp of Java SE, Java EE and other related basic knowledge.
LinkedBear believes that the following types of readers are most suitable for owning this book:
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Technical researchers: Those who are proficient in using Spring Boot, but have not explored deep features and high-level uses; researchers who are interested in exploring the Spring ecosystem in depth
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Skill upgraders: those who have actual project development experience, but are not satisfied with the current status of shallow use; want to be promoted to senior technical positions such as technical director, architect, etc.; job seekers who are troubled by Spring Boot and Spring Framework issues
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Enthusiasts: The technical breadth is sufficient, but the depth is limited. Interested groups who want to continue to delve into the technology.
This book will focus onSeveral core modules of Spring Framework and Spring Boot(IOC, AOP, transactions, Web, embedded containers, etc.) to carry out analysis, and strive to achieve sufficient depth and the lowest possible understanding difficulty.
Readers should not be afraid of difficulties, please rest assured - this book will be step-by-step, without "skipping" too many levels, and readers with basic knowledge can understand it.
Figure 1: Source code analysis in the book
Since this book is an upgrade based on the booklet, the content of the book is more systematic, and it is optimized based on the feedback from readers of the booklet, and the explanation is more in-depth and detailed. It’s not just an upgrade, it’s a refresh!
Different from the centralized knowledge explanation in the booklet, Linked-Bear has reorganized the content into the following four parts to explain the knowledge from the shallower to the deeper.
- Part 1: The core container that Spring Boot relies on at the bottom
mainly introduces the underlying basic knowledge, aiming to help the author lay a solid foundation. First, we review Spring Boot knowledge from an overall level, allowing readers to quickly review the underlying logic and core knowledge of Spring Boot. This knowledge is the basis for subsequent programming and application. - Part 2: Analysis of Spring Boot's life cycle principles. Taking
the Events emitted in each period of the life cycle as the main line, combined with the major events completed in each life cycle, you can have an overview of Spring Boot and gain a deeper understanding of Spring Boot. - Part 3: Spring Boot integrates common development scenarios.
Corresponding to the core containers in the first two parts, the module configuration is explained and the module application is demonstrated in different scenarios. This part of the content is very close to actual combat, and these technologies can be used in e-commerce, gateway services, databases and other scenarios. - Part 4: Running Spring Boot Applications
Spring Boot has multiple packaging methods. The author chose two methods to explain the boot process of the application respectively, and introduced the graceful shutdown feature introduced in the new version. After studying this chapter, you will be able to master Spring Boot completely! He focuses on the research of distributed systems and machine learning algorithms, and has published papers at top academic conferences in multiple fields such as theory, machine learning, applications, and operating systems.
Comprehensive supporting resources, if you don’t know how to learn, come to me!
Spring Boot and Spring Framework are widely used today, and version iterations are frequent, so the content in the book may be different from practice.
Therefore, the author continues his consistent style and will continue to listen to feedback and make corrections as soon as possible. Relevant updates will be posted on the WeChat public account "Lao Xiong Talks Spring" and his GitHub blog. Readers can follow it to get the latest information in a timely manner. They can also learn more about the cutting-edge knowledge about Spring Boot through these channels.
All test codes and courseware included with this book have also been hosted on the GitHub platform. Readers are welcome to download and refer to it.
GitHub warehouse address:
(https://github.com/LinkedBear/spring-boot-source-analysis-epubit)
Finally, Xiaoyi also made a list of knowledge for readers. After reading this book, you can compare and check to see if you have learned all the relevant knowledge:
SpringBoot application startup and boot process
Manual assembly of SpringFramework and automatic assembly of SpringBoot
The startup principle and internal mechanism of IOC
AOP proxy and execution principles
Control principles of declarative transactions and transaction propagation behavior principles
Basic principles of SpringWebMvc and SpringWebFlux
The principle of embedded web container
Ability to read source code
New technology track, leading the way in 2023
In fact, Spring Boot is already quite popular in current Java back-end development.
It eliminates the need for developers to switch their thinking between configuration and logical business, and instead devotes them wholeheartedly to writing code for logical business, which greatly improves development efficiency and shortens the project cycle.
With the understanding of the principles, more and more learners have begun to feel that Spring Boot is "really delicious"!
I believe that more people will use it to achieve great success in the workplace in 2023. If you want to overtake in corners, why don’t you place an order and learn it now?
