If you were a golang interviewer, what questions would you ask?

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No if , I am just a Golang interviewer , From Baidu . meanwhile I also made headlines before I came to Baidu , tencent , millet , Godly golang, Basically passed . My answer should still be more persuasive .

in fact ,golang Your questions only make up of my interview questions 20% about . The order of asking things is not necessarily the following order , Sometimes I will choose the dichotomy difficulty according to my resume , Just ask a moderately difficult question . Let's continue the dichotomy . Here are the questions I asked .

1,make and new The difference , The meaning of reference type

2, Escape analysis

3,channel The implementation of the

4,gmp And gc, Key issues （ The Internet io Waiting in line , Read write barrier ）

5,map The implementation of the , Key issues （sync.map The implementation of the ,map The method of realizing random ）

During this period, according to the actual situation , Ask some details from these questions , But it won't be too difficult . Because my face is p6 Grade , Asking the source code is a little bullying . In addition, I will ask a developmental question , You write go Pits encountered . You can also ask some questions from here , But I won't ask too much . These questions are 10 It must be finished in minutes . The scope of my interview and the interviews I have met before are basically https://draveness.me/golang/ Inside , This tutorial is still very good .

These questions don't have to be answered , I made a comprehensive investigation , I didn't write these questions for you to recite them , I just want to tell you how difficult the interview is , By the way, a few classic topics . In addition, my main concern is actually mysql,redis,mq, Algorithm , Distributed . If someone looks , I'll just add .

Add mysql

Say it first , The interview questions I said are personal , In fact, when you want to meet which company , Searching the interview questions of that company is actually of little use , Because the interviewer didn't say the question bank , Or uniform standards . If I went to another company as an interviewer, I would ask the same question （ Pay attention to the way and difficulty of asking questions , I'll change the title ）. And you meet other interviewers in Baidu , Probably not as I asked . in addition , Because my school recruited 10 All the year round , Therefore, specific questions will be flexibly adjusted . Speaking of school recruitment , I've also been arranged to be an interviewer for the senior colonel's recruitment , School friends can also pay attention , If you can answer , Then surprise level .

I'd like to add my opinion on mysql The way of investigation .

1, eight-part essay ( a literary composition prescribed for the imperial civil service examinations, knows for it rigidity of form and poverty of ideas ) , Why b+ No trees b Trees

Take the first question as the dividing line , The answer came out and asked the following

2, Say yes mvcc The understanding of the

3, How is unreal reading solved

4,redo,undo The function and Realization of

5, Implementation of transactions

If you can't answer the first question, ask , Here are pure octets

2, How to build an index

3, The leftmost prefix of the union index

4, Cluster index And back table

If you think the first half of the answer is not good , Will turn to the simple questions in the second half . Same as above , The questions I asked and the questions I met , Basically all in 《MySQL Technology insider :InnoDB Storage engine 》 Jiang Cheng Yao In the teacher's book .

Add redis

redis Although there are not many things , But it is also necessary to ask .

1, Implementation of underlying data structure , Key issues such as ： Compressed list

2,aof And rdb, Key issues such as ：aof Rewrite mechanism

3, Why use a skip watch

4, Distributed lock and redlock

5, Three distributed structures

6, Big KEY

Basically, it's half clear , Same as above , The questions I asked and the questions I met , Most of it is in 《Redis Design and implementation 》 Inside . because redis The problem is not difficult , If all answers come up , I might ask ： It's expanding rehash When scan Sweep set , Will duplicate data be scanned .

Add mq+es+ Distributed

Then fill in the rest of the frequently asked questions ,mq Mainly kafka. The following basically work 3 Don't ask much within a year ,3 Years or more 1/3 To 1/2 Just through .

1,kafka Zero copy and order of io Zero copy is best to talk about the details , It's actually user space and kernel space mmap

2,kafka The fragmentation of , Consistency of reading （ Water level and active group ？ I forgot my name ） How to ensure consistency with writing

3,es The inverted index of , And sliced query recall

4, Distributed lock ,redis redlock etcd

5, Distributed transactions 2pc 3pc tcc

6, Distributed consensus protocol raft and paxos

7, Distributed database CAP BASE The concept of etcd tidb Understanding

Additional questions , Only when I write my resume will I ask

1,k8s Application and architecture of （k8s In fact, I haven't studied it deeply , casual ）

2, monitor prometheus, For example, the time series database TSDB

3, The content of microservice Architecture , Such as service discovery and link tracking tools

4, If the school recruit, ask tcp

5, Other things I'm interested in

6, Algorithm questions must be asked , Usually choose a moderately difficult one first , See the third question of the week for the difficulty . If it's smooth, add a fourth difficulty （ difficult ）, If you can't do it, change the difficulty of the second question （ Medium to simple ）.

7, Architecture design , Because I'm just one side , This kind of question is usually left to two sides . But my advice is ,mysql table ,redis cache ,kafka The three axes for cutting peaks

At the end , In fact, I have only one standard , All my questions are based on this standard , Just let me feel your passion for Technology , Have a clear plan for the technical route , And is conducting systematic and organized learning for more than a year , Like reading a book , In fact, that's what I ask myself . I believe this condition is met , It's also easy for you to meet other companies .

link ：https://www.zhihu.com/question/67846139/answer/2105444792

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