preface

As a Java programmer, it is very important to lay a solid foundation. Nowadays, the interview of big factories is more and more strict for the mastery of the basic knowledge of programmers. Although the technology is updated quickly, only with a solid foundation can we have a deeper understanding of each knowledge and technology point.

Java programmers how to build a base, most of the white is more confused! However, what makes people excited today is that Alibaba’s first “Java Advanced Essential treasure book”, with complete content, can let readers clearly understand the structure of Java system, from basic to advanced and then to actual combat, take you to do it in one click! This “Java Advanced Essential guide” includes six core knowledge points, including:

  • Core 1: Big factory must ask concurrent programming technology
  • Core two: In-depth anatomy of the JVM
  • Core 3: Network Programming and Efficient IO (Netty)
  • Core 4: Mysql depth advanced
  • Core 5: Go deep into Tomcat
  • Core six: Actual combat small projects (mimicking Xiaomi Mall)

The content of the article is limited, complete PDF version of the base treasure, pay attention to the end of the public account can be obtained

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

Core 1: Big factory must ask concurrent programming technology

1. Introduction to concurrent programming

  • Introduction to Thread Basics
  • CPU core number, thread number, time slice rotation mechanism interpretation
  • Synchronized, volatile, ThreadLocal
  • How do Wait /notify/notifyAI implement collaboration between threads

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

2. Concurrency tools

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

3. Operate CAS on the shoulders of giants

  • The principle of CAS
  • CAS in the three major problems and atomic operation scenarios

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

4. Explicit locks are easy to understand

  • Built-in locks and display locks
  • Fair locks and unfair locks
  • Reentrant of the lock
  • AQS source depth interpretation

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5. Interpretation of concurrent container source code

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

6. In-depth analysis of thread pool internals

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

7. Performance optimization

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

8. Advanced features

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

9.OS Kernel interpretation and OpenJDK source code interpretation

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

Core two: IN-DEPTH analysis of the JVM

1.Java memory area in-depth analysis

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

2. Garbage collector and memory allocation strategy

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

3.JVM execution subsystem

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

4. Advanced advanced

  • JDK built-in tools to parse JPS/jTAT /jinfo, etc
  • MAT checks the actual practice of memory leakage in the project
  • Arthas is an open source Java diagnostic tool for Alibaba
  • Compiler optimization technique

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

5. The JVM

  • Case of high CPU usage
  • High memory usage case actual combat
  • 15 ways to write efficient and elegant Java programs for real

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

6.JVM underlying technology

  • GC prediction and tuning for 100 million stage high flow Wells
  • JHSDB tool perspective L AMbDA low-level implementation
  • JVM(HotSpot) core source code interpretation
  • JVM core module (GC algorithm) handwriting practice

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

Core three: Network programming and efficient IO

1. Network Basics

  • HTTP/TCP/UDP network protocol details
  • Native JDK network programming: BIO, NIO
  • Netty Application Quick Start

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

Net TY advanced and actual combat

  • Server push technology combat
  • WebSocket communication
  • Handwritten communication framework practice
  • Netty sticky packet/half packet problem solving actual combat

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

3. Source code interpretation module

  • BIO and NIO source code parsing
  • Netty source in-depth analysis

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

4. Network underlying principles and source code

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

Core 4: Mysql depth advanced

1. Mysql | storage engine selection and matters needing attention

2. Read mysql | Shared locks and exclusive locks

3. The mysql | partitions

Mysq transaction and isolation levels

5.30 minutes To thoroughly master the execution plan

6. Read BTree and B+ Tree indexes

7. Sq | configuration and analysis of the slow query

8. Sq | optimization strategies and practical

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

Core 5: Go deep into Tomcat

1. Tomcat basis

  • Understand the Tomcat startup process
  • Details on Tomcat configuration

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

2. Tomcat architecture

  • HTTP request parsing and processing flow
  • Knowledge of Tomcat core components
  • Tomcat class loading mechanism and source code analysis
  • Tomcat asynchronous Servlet source code analysis

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

3.Tomcat thread model

  • Tomcat BIO implementation source code interpretation
  • Tomcat NIO implementation source code interpretation
  • Tomcat cluster and session replication solution

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

4. Tune Tomcat performance

  • Connector optimization
  • JVM parameter optimization

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

5. Tomcat cluster

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

6. Tomcat security

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

Core six: Actual combat small projects (mimicking Xiaomi Mall)

The combination of spring+springMVC+ Mybatis framework popular in e-commerce system is used for development. Mysql database commonly used in general e-commerce system is used for database development. This actual combat small project let small white or fresh graduates, to deal with the interview or no big problem, the specific content of this small project is as follows:

Results the preview

Excited! Alibaba first “Java advanced essential treasure book”, theory to actual combat, a key to fix

The last

Many novice programmers just come out to work, if you have a relatively basic programming language, in the work and study will be more smooth, and more importantly, their own learning of basic programming language is the motivation to learn, no matter you learn other programming languages or will be more confident. At the beginning, all my friends changed their careers because of the rapid technological update and my poor foundation. Finally, I could not stick to learning and had to give up.

In the end, I just want to say that programming fundamentals are an important factor in determining how far a programmer can go.

The above Java advanced content has a complete PDF can be shared, need this Java advanced essential treasure book information friends, just a lot of support can be free.

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