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In February, I relied on this PDF document to interview bat. Unexpectedly, I received five offers

2022-04-22 14:02:00 【InfoQ】

This PDF Face to face knowledge includes five major parts ,26 A knowledge ：

  • J
    ava part ：
    Java Basics , aggregate , Concurrent , Multithreading ,JVM, Design patterns
  • Data structure algorithm ：
    Java Algorithm , data structure
  • Open source framework part ：
    Spring,MyBatis,MVC,netty,tomcat
  • The distributed part ：
    Architecture design ,Redis cache ,Zookeeper,kafka,RabbitMQ, Load balancing, etc.
  • Micro service part ：
    SpringBoot,SpringCloud,Dubbo,Docker

One 、java The knowledge part

Now the interview pays special attention to many basic principles , However, many people do not understand some core principles thoroughly , Especially for  Java  Some core basic knowledge points of are not mastered enough ,
for example  JVM、 Common algorithms and data structures .
It's the so-called "ten thousand Zhang tall buildings rise from the ground" , Only grasp the foundation firmly , To go further , In the face of constantly updated technology, we can quickly master , At the same time in the interview 、 You can also stand out in your work ！
Here's what you have to master Java The knowledge part , It's a lot of content , Are some key knowledge ！！！ Friends in need
You can get it for free by scanning below ！
1.Java Basics ：

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PDF file
2.Java aggregate ：

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PDF file
3. Concurrent knowledge

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PDF file
4. Multithreading

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PDF file
Recommended reading ：
《Java Multithread programming core technology 》, There are e-books in the back and below
5.java virtual machine （JVM）
JVM  It's junior Java  The only way for programmers to grow , Study JVM Before , Just know that the code is compiled into  Class, Virtual machine loading  Class  Run it , Study  JVM  after ,
You can deeply understand the process of code from compilation to loading 、 Object creation and garbage collection in memory 、 In daily development, it can quickly locate performance problems, etc , Of course, it's also an indispensable bonus for an interview .


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Recommended reading ：
《 In depth understanding of java virtual machine 》
6. Design patterns
I heard a sentence before ,“ Many programmers don't know how to organize code 、 How to improve efficiency 、 How to improve the maintainability of code 、 Reusability 、 Extensibility 、 flexibility , The code is a mess , But it works ”. For such a statement , Look at the code left when entering the industry , He smiled with shame , Maybe most people will feel the same .

from  JDK  Source code , To the mainstream open source framework , The application of design patterns can be found everywhere ,“ Design patterns are for me ” It has more or less become the instinct of programmers' coding thinking .
Knowledge point ：

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7. Data structure and algorithm
What you need to know ：
Which data structures （ Line , chain , Pile up , Stack , queue ） And in  Java  Where is it useful .8  Big algorithm （ Time complexity , Spatial complexity , Memory ,CPU  Influence ） And its application .KMP  Search algorithm , Two points search , A recursive algorithm （ How to write it , Memory impact ）. Count 、 Figure and its application .hash  surface , And its application in practical work


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Two 、. Database part

Recommended reading ：《 High performance MySQL》 《MySQL Technology insider :InnoDB Storage engine ( The first 2 edition )》


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3、 ... and 、 Open source framework part

Spring  As a lightweight  Java  Development framework , The idea of interface oriented programming runs through the whole  Java  System application , So in  Java  You are often mentioned in an interview .

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Four 、 Distributed high concurrency architecture

This part is about distributed architecture knowledge , Include Redis,Zookeeper, Database performance optimization , Load balancing, etc. ！

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5、 ... and 、 Micro service knowledge



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Reader welfare gift

And there's another one Java The documents of high-frequency test sites for intermediate and senior interviews are shared for free , Having mastered most of the knowledge in the above document is enough to face the interview of many Internet companies, including Alibaba ant financial services
Java Arrangement of high-frequency test sites for intermediate and senior interviews
It includes JVM、 lock 、 Concurrent 、Java Reflection 、Spring principle 、 Microservices 、Zookeeper、 database 、 Data structure and so on .

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more Java Advanced knowledge Notes document sharing , These are good learning materials for interview or study
I rely on this one PDF Document interview BAT, I hope you can ！ come on. , Mutual encouragement

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