Preface

Last week, a fan partner told me that he interviewed several big factories, including Alibaba, Sina, and China Ping An, but eventually got an offer from China Ping An. As for why he chose China Ping An, this editor is also unwilling. Okay, now I think it’s necessary to share the interview process to the big guys.

After listening, a line of words floated before my eyes, "You are young and good for the factory"

But I still replied: "Congratulations, congratulations!!! What did you ask during the interview?"

Boy : "It's the things you said before (pdf interview document), Jvm, Springboot, data structure, lock implementation, cas principle, volatile, etc. usage scenarios, and I used redis in the project, and it was also emphasized I asked, and asked about the low-level implementation details all the way, but couldn't give an answer."

Young man : "By the way, I found that the Alibaba interviewer will keep asking about a knowledge point , until you don’t know how to do it, and then ask about other things, but fortunately, I have read some source code, although I can’t carry it to the end. , But the answer is almost the same"

"Well, I told you before. For you at this stage, look at the underlying implementations, which is the most important and the most cost-effective."

In fact, in Internet companies, many people will be led by the company’s technology and business to carry out some repetitive crud work. Those low-level frameworks are handled by a dedicated middleware team. You only need to simply introduce them and use them directly. Encapsulation allows you to complete a series of highly concurrent operations and stability guarantees without having to perceive the internal complex implementation, thus ignoring the underlying technology. During the interview, you are often labeled as "not enough technical depth" . Let's come together. Look at Ali's interview questions.

Ali side