preface
I deliberately put their own interview experience smooth, summed up a lot of experience. By the way, I have received a total of 3 offers from ant Financial, Meituan and netease. I would like to share precious materials that are very helpful to me this time, involving nine core topics in total. They are computer network, operating system, MySQL, Linux, JAVA, JVM, Redis, message queue and distribution, website optimization, which I stayed up for 23 days to read, I hope it can also help you.
Nine core topics to share with you, realize their dream of dachang, mutual encouragement!
Nine core topics, can be directly concerned about the end of the public account to obtain and download.
Core one: computer networks
For graduating students and the development of small white work experience, computer network related content is asked more, especially involving the protocol is particularly much, such as HTTP, HTTPS, TCP, UDP, ARP, ICMP, three times shake hands four times waved and so on. In a big factory interview, computer network is a must, so want to get this part, what do you need to learn?
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Core 2: Operating system
This part of the operating system, in fact, the content of the question is not much, mainly because this part of the question is also the same several questions, such as thread communication, thread and process difference, process scheduling algorithm and virtual memory, physical memory and so on. So, in this respect, I also sorted out some relatively core content.
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Core three: MySQL
Database MySQL would be much needless to say, don’t ask, don’t is basically impossible, especially Internet companies, now basically is to use MySQL, MySQL of nature is the index, the lock and optimized way, of course, may also ask you a few commands, such as the SQL execution plan, the difference between the engine and on the primary key strengths and weaknesses, B + tree, etc.
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Core four: Linux
In fact, during the spring recruitment period, I had invested in Tencent, one of the reasons why I failed is Linux, I think the interviewer asked me about Linux, I was almost confused. For Linux, the most frequently asked questions are process and network related commands, as well as troubleshooting related commands, zombie processes, orphan processes, etc.
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Core five: Java
Java post as my main language, to in-depth study is certain, but to master the content is too much, such as collection source code, reflection, multithreading, virtual machine, etc., here also deliberately to Java to master the content of a comprehensive arrangement, for reference.
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Core six: THE JVM
The JVM is a very important foundation to master as a developer. During our interview, we asked a lot of questions about the JVM, especially garbage collection, but in reality, the JVM covers a lot more detail than that, including at least the following figure.
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Core 7: Redis
The interview will also examine practical projects, and Redis is used in many projects, because it is easy to use. However, Redis also has a lot of theoretical content, the principle of which must be studied in depth, so Redis to review what? At least the following.
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Core 8: Message queuing and distribution
The first and second parts of the interview usually ask questions based on your actual project situation. My project involves message queue, so I specially prepared the part of message queue before the interview. Message queue mainly involves points including message queue, distributed lock, sub-database sub-table and so on. I have specially organized a brain map for these contents, and there is basically no problem to review according to the key points in the map.
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Core nine: website optimization related
When our website size is larger, this time, the need to consider is very, very much, you need to all kinds of optimization, for example, caching, depots table, load balance, etc., on the website scale of the problem, in fact I also asked a few times, for example, we usually go on zhihu, a problem sometimes very hot, all of a sudden hundreds of millions of heat, in the face of such problems, How are we gonna get out? How to optimize?
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In fact, in addition to the nine core topics, I also sorted out other relevant technical points collection, such as Spring family barrel, tuning, BAT and other first-line Internet big factory interview questions, this is not a list, you can private letter I need.
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conclusion
The nine core points sorted out above, I hope you, as a developer, can also calm down and learn by heart. If you also take Dachang as the goal, as long as you can stick to it, I believe it is only a matter of time to enter dachang.
The nine core knowledge points involve mind maps, documents, PDF and other free to share, the nine core topics, you can directly follow the public account below to obtain
