Download and install the java international version of Minecraft, it's worth reading!

beginning

Recently, a buddy went to interview a popular big factory. Among them, some of his impressive interview questions are:

1. Introduce how to analyze and optimize MySQL SQL statements?
2. How does Redis implement distributed locks?
3. How to implement local cache and distributed cache?
4. Tell me about the memory layout and operating principle of JVM?
5. How does RocketMQ store messages? What are the high-availability and high-performance designs in the source code?

The interviewer is worthy of being a big brother, asking questions layer by layer, after asking **"How does Redis realize distributed locks" and then asking "What are the stand-alone locks? Why can't it be used in a distributed environment?"**

Since I usually only change the previous framework code, my buddies are stunned on the spot! After the face, I felt that my skills were weak! The result is of course hanging!

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5 section creator mode

Section 1: Factory Method Pattern

Section 2: Abstract Factory Pattern

Section 3: Builder Mode

Section 4: Prototype Mode

Section 5: Singleton Mode

7-section structure model

Section 1: Adapter Mode

Section 2: Bridge Mode

Section 3: Combination Mode

Section 4: Decorator Mode

Section 5: Appearance Mode

Section 6: Flyweight model

Section 7: Proxy Mode

10-section behavior pattern

Section 1: Chain of Responsibility Model

Section 2: Command Mode

Section 3: Iterator Mode

Section 4: Intermediary Model

Section 5: Memo Mode

Section 6: Observer Mode

Section 7: State Mode

Section 8: Strategy Mode

Section 9: Template Mode

Section 10: Visitor Mode

Write at the end

Many people lament that "learning is useless". In fact, the reason why the theory of uselessness arises is because what they want does not match what they have learned, which means that they have not learned enough. Whether it is studying or working, there should be initiative, so if you have the dream of a big factory, then you have to work hard to realize it yourself.

The above learning materials are all free of charge. Finally, I wish you all good health and successfully get your favorite offer!

Due to the limited length of the article, the answers to the interview questions of Ant Financial and JD.com are organized in PDF files.

How to get information: Like + comment on my article, follow me, then click here to get it for free

Ant, Jingdong Java Post 4: Principle + Index + Bottom + Distributed + Optimization, etc., have already taken the offer
Ant, Jingdong Java Post 4: Principle + Index + Bottom + Distributed + Optimization, etc., have already taken the offer
Ant, Jingdong Java Post 4: Principle + Index + Bottom + Distributed + Optimization, etc., have already taken the offer

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