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!
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.
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