My friends have been talking about changing jobs. Companies large and small have interviewed a lot, but they never get a satisfactory offer. Either the package is too low or the interview is abused. After the previous few interview failures, I finally understood what a weak foundation is, and the ground was shaken. The interviewer randomly investigates a point of knowledge , but can't answer it, so how can he pass the interview?
However, I recently received a good news from my small partner. I have already got an offer from Ant Financial. The company is big enough and the base is not bad. Although it is a P6, he still vaguely feels satisfied. In fact, I am still a bit puzzled. His previous foundation was very average, so he suddenly got an offer from Ant. Later, I couldn't hold back, and asked him: "What have you done recently? What did Ali ask you during the interview?"
As a result, this guy has been practicing in retreat at home, slowly digging through some necessary source code and the underlying principles of concurrent programming.
Share some source code analysis documents and concurrency underlying principle explanation documents that Java programmers have to learn here, including Spring source code analysis, MyBatis source code analysis, detailed explanation of Java high-concurrency programming principles, SpringBoot source code analysis, netty, Dubbo, etc., due to space Restrictions, here only all the contents of this actual combat document are displayed, friends who need to get the complete document for learning, click here to get the source notes for free
Java high-concurrency programming principle detailed document
It mainly consists of four parts: The
first part: The first part mainly elaborates the basic knowledge of Thread, and introduces in detail the use of thread API, thread safety, data communication between threads, and how to protect shared resources. It is the basis for in-depth study of multi-threaded content.
The second part: the introduction of ClassLoader, this is because ClassLoader is not unrelated to threads, you can use the synchronized keyword, or explicit lock methods such as Lock to protect the data consistency of shared resources in the code writing stage, then a Class in How does the data structure of the method area (in the metadata space after JDK8) ensure data consistency after the entire initialization process is completed? This requires a more comprehensive knowledge and understanding of ClassLoader.
The third part: a detailed and in-depth introduction to the semantics of the volatile keyword. The volatile keyword is very important in Java. Examples will show how to use the volatile keyword and introduce the Java memory model in great detail.
Part 4: From the perspective of program architecture design, it explains in depth how to design efficient and flexible multi-threaded applications
Sections 1 to 16
Sections 17 to 29
Spring source code analysis document
The main contents include:
- IOC container
- Launch of IoC container in Web container
- Spring JDBC
- Spring MVC
- Spring AOP get proxy
- Spring declarative transaction processing
- Implementation of interceptor calls in Spring AOP
- Spring-driven Hibernate implementation
- Implementation of Spring Acegi Framework Authentication
MyBatis source code analysis document
This document analyzes the Mapper binding process, the principle of SqlSession operating database, and the principle of plug-in implementation from the perspective of the MyBatis source code. At the same time, it introduces some advanced usage of MyBatis and explores the design patterns used in the MyBatis source code. There are seven modules in total.
The first to third modules
- Getting started with MyBatis
- Configuration file parsing process
- Mapping file parsing process
Module 4 to 7
- SQL execution process
- Built-in data source
- Caching mechanism
- Plug-in mechanism
SpringBoot source document
The first part (sections 1~5): Introduces the introduction of Spring Boot, database usage and access performance improvement, interface design, security design and other important technical knowledge, focusing on practicality, aiming to help readers quickly master Spring Boot The development methods and essence are integrated into production practice as soon as possible.
The second part (sections 6-9): Use actual cases in the production environment to explain how to use Spring Boot to develop distributed applications and cloud applications, and how to use microservices to build a highly available service platform, which is extremely practical.
The third part (Section 10~12): From the source code level, it focuses on the analysis of the implementation principles of Spring Boot's program loading, automatic configuration, data management, Spring Cloud configuration management, discovery services, and load balancing services, etc., to help Readers can understand SpringBoot development more deeply and master its essence.
Kafka source code analysis and actual documentation
This document will start from the four aspects of Kafka's internal implementation principles, operation and maintenance tools, client programming, and practical applications, and systematically explain all aspects of Kafka. The book has 10 parts. The general content is as follows.
Dubbo source code analysis document
Catalog display
Part of the content is as follows:
There are some learning documents with more source code that will not be shown. Due to the length of reading, friends who are still studying the source code need these learning materials. Please click here to get the source notes for free.
Experience
When it comes to source code, some students seem to be disgusted. They always think that they can write code. Why do you have to understand how the source code is implemented?
Several benefits of looking at the source code
- Learn how to optimize performance, design patterns, etc. from the source code
- Go deep into the source code to understand the truth
- Understanding the source code can solve the problem better
- You know the source code, the interviewer knows you better
How to read the source code is more efficient!
- Starting from the problem, looking at the source code with the problem
- Learn source code for debug
- Write, write, take notes
Well, I hope everyone will develop a good habit of reading the source code, and easily handle the interview method for the interviewer to root out the problems.
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