1.3 years of work experience, double non naked resignation agency face-to-face experience [already employed]

author ： Coconut silk and soft silk
Link to the original text
source ： Cattle from

My friends around me , Biological experience . Let me believe that entering a big factory , If you prepare well , It's really not that difficult . Reprint his facial experience . At the end of the article, there is an interview of his own , Interested friends can have a look at , I saw it myself and benefited a lot . Excellence is justified .

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Personal information ： Two undergraduate courses ,19 year 7 Monthly entry ,1.3 Years of working experience , Wan de resigned naked ,10 Start preparing at the end of the month . All are Boss Cast , at present offer To determine the , Refused Ctrip ,shopee, Cargo lala , sound of dripping water , Kwai and other companies interview . 「 What I want to say is that there are still some opportunities for social recruitment , Write your resume 」

I have an interview with Niuke - Niuke interview ｜ Ten thousand words interview , The double non naked resignation boss will show you about the interview 、 Love things ！

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58 one side 40min hang

Self introduction.

Leaving reason ？ Why leave at this time ？
http1.1 http1.0 http2.0 difference
redis How to optimize if the length is too long ？ Which one? api, The efficiency will be lower if the amount of data exceeds ？
MySQL What optimizations have been done ？ Overlay index ？limit The difference between the two parameters ？MySQL Other ways of paging optimization
concurrenthashmap How to ensure thread safety , Talk about your understanding
arraylist linkedlist Use scenarios
The difference between a local thread and a guard thread ,Thread.setDemon();
Thread state
Thread pool parameters ？ Why is thread pool used new Not good. ？
project ： How to adjust the background interface of the front desk ？rpc？ How big is the main service
What do you want to ask me ？
Current salary Salary Expectation ？
encourage

Bytes to beat one side 78min too

Self introduction.

Your understanding of the whole stack
Leaving reason , Why leave at this time
Didn't you learn anything technically ？
Which one is more familiar ？
synchronized？mute lock How to achieve
Java See what source code ？ Thread pool benefits ？ What's wrong with multithreading ？ It takes only a few milliseconds to create thousands of threads during pressure testing. Is it necessary to save this overhead ？ Memory overhead , Time cost ？ Thread pool parameters ,execute Execute the process ,work？ Will no work be deleted ？ Sleep state ？idl How to configure it ？ When the maximum thread is full ？
What are they? Map？ What else Map？ With jdk A few ？ The way HashMap data structure ,put How to solve the value hash conflict ？ The number of treelized transfers in linked lists ？ Why 8 Why 6？？ Why is an array quadratic ？ How to expand the capacity of ？ Capacity expansion rehash The process of ？
concurrentHashMap Hash flow of ？concurrentHashMap How to achieve thread safety ？CAS What do you mean , How to achieve ？Unsafe How to achieve ？concurrentHashMap When to use CAS？ In the case of concurrency, how to insert two threads after they arrive ？ When initializing, both threads detect that they need to be initialized , And then how to do it ？
Algorithm problem coins COINS / I didn't write a word , Did 20min It's white paper ,（ I ： We should use dynamic programming to do , But I don't know how to do it , interviewer ： How to write the transfer equation ？ I ： I'm sorry , Forget the ）
How to learn ？
The most popular blog ？ Website ？
What good books are there ？ Both technical and non-technical
How to look at learning and reading ？
What do you ask me ？
Which aspect of your department do I need to improve ？
When will the results come out ？

Bytes to beat Two sides 30min No algorithm problem hang

「 Forget the recording , That's all I remember 」

Self introduction.

Why quit ？
Do you think you have something to talk about ？
What's your main job ？ The most complex business is the process ？
The concurrency degree is raised 100 What are the optimization points ？
How does current limiting work ？ Implementation of token bucket algorithm ？ What are the other ways of current limiting ？
Interface 450ms Optimized to 360 ms How to optimize ？
tomcat Just changed the parameters ？
redis Cluster deployment mode ？ The difference between master and slave and sentry ？
What else are the caching methods ？
redis data structure ,string Underlying implementation , Jump table complexity ？
redis Have you ever slowed down during use ？
nginx What's the shape of the back ？
What else does the gateway layer know ？
Position yourself , Technology development ？
What others think of you ？
What do you ask me ？
Fluent speaking one side 40min too
Self introduction. , project 20 min,

How to solve a single point of failure ？ Add nodes automatically or manually ？ How to measure the load capacity of the lifting system ？？
http 1.0 1.1 difference ？
The difference between concurrency and parallelism ？
The concurrency number has reached 400 How to optimize ？
Cache penetration ？ How other requests know that the value is in the cache ？
How does the lock work ？ How do distributed locks work ？ Let the past requests fail or delay a large number of requests blocking there ？
Let's talk about the logging module ？ Log unified record ？
How is usability guaranteed ？ How does the alarm work ？ The indicator of alarm is just health check ？
Does mutual invocation between services involve ？ Distributed link tracking if there is a problem with a service call , How to troubleshoot problems ？
https The Protocol target source is a static file , Press enter to complete the request link ？http The difference between static files and interface requests ？ Yes CDN Do you understand ？https Encryption is symmetric or asymmetric ？
SQL Fine tune what you're going to do ？ The data structure of the index ？MYSQL What's your business ？ What are the more common ones ？
frequently-used Linux The order kept saying , Just say the name of the command
Java turn golang What do you think ？
You want to ask me ？
14 Follow up below line 3 Round interview .「 Rejected 」

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Baidu one side 50min too

Self introduction.

The key SQL How to optimize ？ Why the performance is not good ？ Do primary keys have to have ？ If the data index density is very poor , Your optimization doesn't mean much ？
MySQL What kind of indexes are there ？ The difference between clustered index and secondary index ？ Index data structure ？ Why B+ Trees ？
MVCC？ How did the version number change ？ How to determine the version when updating the data ？ How to solve the problem of unreal reading ？
One SQL How to get to the index ？MYSQL How would you choose ？MySQL Which informal writing methods can't hit the index ？
MySQL What kinds of logs are there ？redo log What's the main use ？ After submission 100% Do you want to drop it ？ Why? MySQL To write redo log buff Memory ？
redis How do you use it ？ Why choose to use redis？ Why? redis Come on ？
redis Several types of data ？redis string The underlying implementation of ？
Have distributed locks ever been used ？ Tell me how to use it ？ Which command to use ？
redis Bottom hash Let's talk about the table expansion mechanism ？
Class loading process ？ Common class loaders ？ Call to order ？ Why do parents appoint ？
mq Repeated consumption , How to solve the problem of losing information ？redis Of list There are several operations ？ Features of bloon filter ？ Cache penetration ？
static Keyword usage ？
The data structures used are ？Map put Let's talk about the process of
kafka,zookeeper Understand? ？
ThreadLocal Have you used it ？ No remove What's wrong with it ？
Oral algorithm ： The word print .
What's the problem? ？

Two sides of Baidu 68min too

Self introduction.

Which project takes longer , Let's talk about both project technology stacks , So let's talk about that *** What did the project do , Some query dimension interfaces ？ If you were to develop some interfaces now , How do you do interface isolation . Table number ？ Table data quantity ？
SQL Let's talk about what we've done ？ How to replace ？
How does current limiting work ？ Explain it.
Let's talk about another platform . According to the introduction just now .
redis Solve client session How to share information .
redis What problems do distributed locks solve ？
redis Why can distributed locks be supported ？ How to use it ？
MQ For business scenarios ？MQ What's your advantage ？ Under what circumstances can this technology be used ？ What is the core reason ？ It's OK to start a thread. What's the difference ？
zk,kafka
Let's talk about it ？
Spring How to solve the problem of circular dependence ？
Let you write about stack overflow, how do you write ？ Why are so many elements set to a collection not GC？
Introduce to you Java Lock of ？
Look at the source code, what's your understanding ？ Introduces thread pool execute,submit The idea of adaptation in the world
What do you ask me ？10min

Baidu 3 Noodles 36min too

Self introduction.

The reason for blogging ？
Leaving reason ？
Why the naked words ？
What opportunities are there to see again ？
Long-range planning ？
Your biggest advantage ？
How do you learn a technology ？
How do you achieve a short-term goal ？
What else to ask me ？
「 The process is so fast that there are no friends 」, After half an hour, we sent the evaluation , After three hours of preparation, I sent an email .

sohu 1 Noodles 64min too

Self introduction.

There are others offer Do you ？
tcp Three handshakes , Why four waves is 4 Time ？
http1.0 1.1 2.0？
redis The implementation of distributed locks ？
redis What are the data structures ,zset What is the underlying data structure , Let's talk about ？
== equals difference , If hashcode Equal means equal equals Is it equal ？
hashmap Bottom implementation 『tableSizeFor,hash』？
1.8 comparison 1.7 Why does the head plug change into the tail plug ？
Thread safe map What are they? ？ Why concurrenthashmap？ What is the underlying implementation ？
When will it become a red black tree ？ Double hash table ？「 These are actually about the source code level ,initTable,resize,tryPresize,Thread.yield,ForwardingNode.」
volatile Let's talk about ,MESI？
Spring IOC,AOP Tell me about your understanding ？
Spring What do injection methods know ？
bean Is it thread safe ？
Cache penetration , An avalanche , Tell me about your understanding . Solutions to the avalanche problem ？
The actual scene is ： Activity page , Some users don't cache the page data themselves , Some users have a corresponding cache . Only the users who participate in the activity have the cache , How to ensure the normal return of the user's request .
Innodb,memory difference ？ Cluster index , The difference between non clustered indexes ？B Trees ,B+ Tree difference ？innodb What else is the index ？ Go back to the main table again ？ When not to go ？
4 Two levels of transaction isolation and separate issues ？
Linux Do you use more orders ？awk Have you used it ？
SQl Fine tune how you do it ？
Java What does the garbage collector know ？ Which one to use in the case of high concurrency ？
Algorithm ： Order traversal in binary tree , Recursive, non recursive implementation

Write an example pattern
What do you want to ask me ？
Where to improve ？
The framework only stays at the level of use -14,15,16 topic
Less business thinking -16 topic
Department technology stack ?
What the Department does ？
Follow up interview process ？-1 Years of experience, two rounds of technical .

There is also an interview with niuke.com , It's also him , Benefited greatly .
Ten thousand words interview , The double non naked resignation boss will show you about the interview 、 Love things ！