A three-span 211 college students face through (Ali, Tencent, beating bytes)

First, the opening

We, as a professional civil engineering under the two in a 211 college students, a sophomore known by almost found the professional future because (a know almost changed life issue!) Early to make a career change plans. Thanks to the South do not give up, and finally multi-disciplinary research to ensure a soft South hospital, it turns out, the school's reputation in the spring of strokes brought me a lot of help to cover up the multi-disciplinary disadvantage. After a study last semester, basically a winter vacation to come back, even if the end of February officially began spring practice strokes.

Two, before the body

Prior to surface through, I want to say two very important outside factors from personal experience: the rhythm of the interview and psychological preparation.

1. Interview rhythm

Not really experienced before the interview, we will certainly be thinking: first face small factory practice your hand, go face manufacturers. However, in fact, is not the first small factory manufacturers rhythm again, but much smaller sizes, large and small little rhythm. Manufacturers and small factories are usually interspersed with an interview time, and often the first manufacturers face. This requires that we first of all do a good job of preparation from the beginning of spring trick - even if the depth may not be enough, at least to cover the breadth of knowledge most points, so that "even if the March 1 side bat, able to live at least 1 surface" s level. If you do not grasp, it is better surface drag two days, two days of growing very rapidly (like two days before the final exam). I ate burned by: Tencent side very search, post and get can not tell what (God knows how I think), so in the face of others Tencent 2,3,4,5, I entire recruit only this spring one more chance - bad performance of other interviewers will not be fishing.
Given our ability to enhance slowly over time, so personally I feel the most wanted company to arrange in the late review of more appropriate. Of course, taking into account hc issues. Take me give chestnuts, I had early March on the official website voted headlines, but for various reasons have not been interviewed, missed a collective interview late March until late April before the interview by. March compared to the students face off, I lost choice department, but in late March, I really do not have confidence through the interview. Moreover, the headline for this company, be sure to first try to push inside, no written examination, departments are free to choose, good luck to both sides of the inlet, and finally go to the official website delivery!

2. psychological preparation

The front spring trick pulled from February, May, very long. Middle not only learning to read, as well as ongoing interviews, and school curriculum and examination of possible arrangements, so mental health is very important ah. Big Brother you have to hold fast to his girlfriend girlfriend, no girlfriend's roommate hold of it (here thanks to several of my dorm mates!)
In addition, before the spring move would have "to face immediately spring to recruit" psychological preparation, is the ideal time line:

Last year, November-December realize that looking for practice, beginning with a brush problem, look through the surface material (the algorithm is the most difficult assault)
do not project a deep winter project (non-crud), the project has a project to dig deep (distributed, highly concurrent up hate, evil Ali)
beginning on March 1 spring recruit, sea cast and preparing for interviews.
March - April :( Tencent, Ali Tiqian Pi stage, Netease and other manufacturers, headlines, pdd rolling interview stage, other plants are also beginning to come) while learning by watching cattle passenger side face interview, interview collapse do not mind collapse, lessons learned, under a good face. A recommended offer to acquire a repeat, otherwise the back of mind easy fried.
April - May :( formally approved Tencent, Ali and other manufacturers, headlines, pdd rolling interview stage, Huawei, blue and green are starting) Gangster this time has got the offer, like me Tiqian Pi's cold to properly prepare the formal grant it, it is still carried out interviews and cross-learning. Tencent do not lock your resume, can be fishing the surface. Ali, a face only a stage, carefully chosen department, do not iron head. Blue works as long as you can into the side, cost is too high. Huawei is also very good, 2 side asked a question on the basis that personality tests compare metaphysics (who would have thought now Hass was pushed to the cusp).
May - 6 months: manufacturers basically before the end, but Huawei is an exception, offer hair slow, too slow entry, slowly and so on lottery now. But this time also received a phone call did not move over the department, can pick up a leak. I even received a phone interview Ali department in headlines headquarters building (= =)

Tencent side

  • You know what RPC framework
  • RMI how to achieve?
  • What Netty in the thread pool is used?
  • How to set the parameters of the thread pool? What if the request exceeds the number of threads in the thread pool will happen?
  • RPC and the difference restfulAPI
  • Why did you SpringBoot this version, compared to the Spring Framework What are the advantages?
  • Do you have knowledge of SpringCloud thing?
  • How about reptiles speed? Single-process or multi-process?
  • Frequent disabled access how to do?
  • What is the coroutine? Difference coroutine and thread pool?
  • The difference Mybatis and hibernate
  • A sql query slow, one million level, single-table, do you think the performance problem may lie?
  • If the two tables to check slow, the problem lie?
  • Inner join and left join different performance, inner join but slow Why?
  • redis how to implement message queue? How to achieve distributed lock?
  • He said the head several head. What type Content-type. get and post the difference?

Ali (Business Platforms Group) side

  • How to solve the message queue repeated consumption

  • MQ is able to do stand-alone anti-high concurrency

  • Netty in serialized fashion

  • If you want to improve the performance of what serialization scheme?

  • Netty thread pool: nioeventloopgroup serial no lock and the selector of the thread package

  • Setting the parameters of the thread pool

  • Given how the number of threads: n + 1 and 2 * n + 1

  • There is no test had a different effect on the performance of the number of threads

  • What is your web project several tables were yes.

  • Distributed transaction implementation method?

  • update is atomic what?

  • Will update deadlock

  • hashmap will not deadlock

  • concurrentHashMap: describes the structure of a wave of 1.7 and 1.8

  • Build specification or standard indexes:

  • From a macro point of view about the database, "is how to do it."

  • mysql file system is how to find the data?

  • Particularly large amount of data will be how to do it when mysql

  • mysql is how to establish a connection with the outside

  • redis single get and set operations are not atomic

  • Why not make multithreaded redis

  • Design a spike system: build a website and database design considerations background of the entire system.

  • It allows a single case of how design: such is the whole point of buying, the whole point each will have different inventory items with different prices added to panic buying

  • How do you think of 996? How you work to see no technical content

PS: there is a way, pushing people within this sector all over the face of my company one of the best, blowing a wave here.

Ali (Business Platforms Group) two faces

  • The difference leftjoin and rightjoin
  • Several implementations of distributed transactions
  • What kind of programs with high concurrency.
  • How to optimize the use of distributed transactions rocketmq the program.
  • CAP theorem
  • http and https difference
  • https unsafe place possible
  • Open a url, go through those processes:
  • This process is what has been done in the operating system
  • Taobao Home to the request, how to improve performance
  • If the order is to climb CDN page black production, rather than CDN, how to achieve static pages and dynamic content on the server merge?
  • The difference between session and cookie, and application scenarios
  • How to ensure the safety of the cookie, such as your cookies to be copied?
  • Multiple authentication can not guarantee security, how should we do?
  • You can put all the information clients are copied to go, how to prevent such attacks?
  • You know those rpc framework? dubbo load balancing?
  • The principle of dynamic proxy cglib and the jdk? The performance difference between the two?
  • Acting with more dynamic after have any effect on memory, Well?
  • Dynamic proxies, reflecting the production of objects where the jvm? It will not affect the permanent future generations or 8-dimensional space?
  • Say something about proxy mode? Acting differences mode and the adapter mode?
  • You think you said proxy mode function enables the adapter thing?
  • java thread pool ThreadPoolExecuter and four were built for what scene?
  • Well there is a national award? Github have involved large-scale project? There scholarship?

PS: Ali interns demanding to see he meant to have learned to work with the framework, to be able to kind of work.

Third, the summary

Throughout the spring and move, experience the brightest Great God, especially when others have not themselves offer of ............ lucky in the last spell a lot of headlines and gave me a psychological achieve the desired offer, ending more than two months torment.
But unfortunately, ultimately I did not get any one of BAT offer, with big God other than the brightest it is far worse; arithmetic problem before but also because there is no accumulation, but depended on the interview luck too far strips; each point is also knowledge no in-depth understanding, recite now have forgotten half; and, most importantly, write the code less!

This article ends, like friends remember little praise and attention Ha, thanks

Guess you like

Origin blog.csdn.net/qwe123147369/article/details/92004615