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The first-line Internet architect Java framework architecture will see the development of Java in 2021

The byte is bouncing :

  • Self introduction. , It mainly talks about what we have done and what we are good at
  • Watch your project do Spring More , Ask me Spring Relevant stuff , IoC What is the concept ?
  • Bean What is the default scope of action for ? Other areas of action ?
  • What's the concept of index and what's the use ? MySQL What are the main cable bows | structure ? Hash cable bow and B+ Tree index comparison ?
  • How do I write with threads , Can you use some threading framework ? ( No framework ) Java The concept of thread pools ? Where is the thread pool
  • some ? What type of thread pool does the thread pool factory have , And thread pool parameters ?
  • ConcurrentHashMap Let me talk about it. ?
  • Java GC Mechanism ? GC Roots What are they? ?
  • Java bin What tools have been used under the package ?
  • Algorithm problem : Red and blue balls , in total N individual ,N>2, Permutation and combination , continuity 3 The same color is illegal , Find the number of legal permutations

Byte jumps on two sides :

  • Self introduction.
  • Project inquiry : Asked about the earliest project on the resume , project QPS ? Data source and transmission form ?
  • To launch a HTTP Process of request ? Just mentioned DNS , DNS What transport layer protocol is used ? Why do you use TCP agreement ?
  • ( I said, actually, I don't know what protocol is used ) He said what protocol would be more appropriate for you to design ? ( Think about it , say
  • Think UDP More appropriate , It is light and does not occupy server bandwidth , Checked the TCP and UDP There are , Used in different situations )
  • TCP Three handshakes and four waves of the agreement ?
  • Sync IO And asynchronous IO The difference between ?
  • Operating system blablabla? ( meng ) Forget it , Just ask you , select and epoll ?
  • How threads synchronize ?
  • MySQL To what extent ? binLog Do you know? ?
  • Describe the process of stacking ? Time complexity of reactor building ? Top of the heap K Maximum time complexity ?

Byte jumps three sides :

  • Self introduction. .
  • ConcurrentHashMap stay Java7 and Java8 The difference between ? Why? Java8 Concurrency is more efficient ? When to use
  • HashMap , What's the use of ConcurrentHashMap ?
  • What's the mechanism of locking ?
  • ThreadLocal ? Application scenarios ?
  • Web What is the container for ? Your project involves SSM frame , A request to Tomcat Container , How to get to SSM Go to the code ?
  • Do you know network protocol ?
  • Project introduction I What do you do next ? Tell me what you learned ?
  • How do you study ?
  • What is the biggest difficulty that the university has encountered so far ? How to overcome ? Is there pressure when there are too many things ?
  • Future planning ?
  • There are offer Do you ?
  • Design a system : To facilitate a transaction , There are many kinds of goods , There are buyers and sellers , Facilitate a transaction in which the buyer's price is greater than or equal to the selling price .

more BATJ senior Java Required questions and answers

 Front line internet architect Java Framework architecture ,2021 Come and see Java The development of _ The programmer

summary

I received it in three working days offer, The headline interview experience is still great , In this headline interview, it seems that every technology asked me about the algorithm , Then there is middleware 、MySQL、Redis、Kafka、 Network, etc. .

  • The first is the algorithm

About the algorithm , I think the best thing is to brush the questions , Dead brush , Do more exercises , Add your own understanding , It's still easier to win .

and , I seem to be 《 Algorithm brush question LeetCode Chinese version 》、《 The fun of algorithms 》 I've probably gone through it all , Especially this one

《 Algorithm brush question LeetCode Chinese version 》 All in all 15 Chapters : Programming skills 、 The linear table 、 character string 、 Stacks and queues 、 Trees 、 Sort 、 lookup 、 Violence enumeration 、 Breadth first search 、 Depth-first search 、 Divide and conquer method 、 The law of greed 、 Dynamic programming 、 chart 、 Details of the implementation of the problem

 Front line internet architect Java Framework architecture ,2021 Come and see Java The development of _ The backend development _02

《 The fun of algorithms 》 share 23 Chapters :

 Front line internet architect Java Framework architecture ,2021 Come and see Java The development of _Java_03

 Front line internet architect Java Framework architecture ,2021 Come and see Java The development of _ The programmer _04

  • The second is Redis、MySQL、kafka( Let's see what review notes I have )

It's basically the analysis of the real interview questions 、 Notes and learning outline , I think that's all I need for review ( individual opinion )

 Front line internet architect Java Framework architecture ,2021 Come and see Java The development of _ The programmer _05

  • The third is the network ( Show you a copy I got before 《JAVA Organize the core knowledge 》 Include 30 Chapter classification , This book 283 page JAVA The arrangement of core knowledge is still very good , One time summary 30 A big knowledge point to share )

 Front line internet architect Java Framework architecture ,2021 Come and see Java The development of _ The programmer _06

This article has been  CODING Open source project :【 A big factory Java Analysis of interview questions + Core summary learning notes + The latest explanation video + Actual project source code 】 Included

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