Ant Financial Service: Dachang interview strategy, are you ready? (Selected from Java post interview, recommended collection)

I recently talked to a programmer with a good resume about the interview of Ant Financial, but the news I heard was that I didn't pass the technical side.

This confuses me. Later I found out that this is not an exception. Many large-scale programmers with about two or three years of work experience have encountered technical bottlenecks.

Work is getting more and more comfortable, but instead of losing the enthusiasm for active learning, no longer assiduously study technology and understand new knowledge.

And as a group with more serious overtime work, sometimes even changing codes and working on projects all night, even more lack of time for in-depth thinking.

But I have to say that these are just some excuses to comfort myself. The first year of work is often the fastest year of technological improvement, with enthusiasm and passion. With the passage of time, there are not a few people whose technology is still in the state of one or two years ago, and mistakenly treat repetitive operations as skill experience.

Before analyzing the reasons why one's technical level has not been improved, first have a clear understanding of which areas of ability are concentrated:

1. Technical Depth

Do you have a deep understanding of the architecture design ideas of message middleware?

Have you ever delved into the architecture design of middleware or distributed transaction framework?

How to deal with faults and optimize the underlying system in tens of millions of concurrent scenarios?

2. Technology breadth

Do you have a certain understanding of a series of related technologies such as high concurrency, caching, high concurrency, high availability, and microservices?

3. Project experience

This is definitely an icing on the cake. Have you been responsible for a large-scale, highly available, and highly complex system architecture design for tens of millions of users? Or are you just responsible for the CRM system and OA system of dozens of people?

"All the events we have experienced are not emergencies, but the result of a series of gradual and change." The feedback mechanism of time will never lie . It is far from enough to have a big factory goal. It is necessary to make up for shortcomings, arrange daily learning reasonably, improve efficiency, and so on.

The following is the interview process recorded by the programmer himself after he went to Ant Financial for an interview . Friends who need information, click here to get it!

Ant Financial Service: Dachang interview strategy, are you ready?  (Selected interviews, recommended collection)

 

It can be seen that the interview points asked by Ant Financial are also around: JVM, concurrent locking, performance tuning, multi-threading, Redis, distributed and other technical points raised questions, to examine the breadth and depth of the interviewer's grasp

For this reason, I have made a special compilation of his interview process, combined with the interview types and questions of major first-line Internet companies, and made a systematic division. Here is a sharing for everyone, which will make the interviewer less walking. Unnecessary detours. At the same time, detailed interview analysis documents have been made for each topic to ensure that readers at each stage can understand it.

JVM core knowledge points finishing

  • JVM memory area division
  • JVM execution subsystem
  • Garbage collector and memory allocation strategy
  • Write efficient and elegant Java programs
  • Performance optimization

Ant Financial Service: Dachang interview strategy, are you ready?  (Selected interviews, recommended collection)

 

Concurrent programming soul torture

  • JAVA thread implementation / creation method
  • 4 types of thread pools
  • Thread life cycle (state)
  • 4 ways to terminate threads
  • The difference between synchronized and ReentrantLock
  • ThreadLocal principle
  • The role of the volatile keyword
  • JAVA blocking queue principle
  • CAS、AQS

Ant Financial Service: Dachang interview strategy, are you ready?  (Selected interviews, recommended collection)

 

Performance tuning

  • MySQL tuning
  • JVM tuning
  • Tomcat tuning
  • High concurrency performance tuning

Ant Financial Service: Dachang interview strategy, are you ready?  (Selected interviews, recommended collection)

 

Internet Interview Questions Collection

  • Memcached interview questions
  • Redis interview questions
  • MySQL interview questions
  • Spring interview questions
  • Spring Boot interview questions
  • Spring Cloud interview questions
  • RabbitMQ interview questions
  • Kafka interview questions
  • Linux interview questions
  • MyBatis interview questions
  • ZooKeeper interview questions
  • Dubbo interview questions
  • Elasticsearch interview questions

Ant Financial Service: Dachang interview strategy, are you ready?  (Selected interviews, recommended collection)

 

Due to space limitations, some sorted materials are displayed here. Friends who need materials, click here to get them!

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Origin blog.csdn.net/m0_46995061/article/details/115266090