Preface
I deliberately smoothed my interview experience and summed up a lot of experience. By the way, a total of 3 major offers were harvested this time, namely Ant Financial, Meituan and NetEase. I specially shared this collection of materials that helped me a lot. A total of nine core topics were involved, namely computer networks, Operating systems, MySQL, Linux, JAVA, JVM, Redis, message queues are related to distribution and website optimization. I stayed up all night for 23 days to finish reading. I hope it can help you too.
Share the nine core topics with you, realize your dream of being a big factory, and encourage each other!
The nine core topics can be obtained and downloaded directly by following the official account at the end of the article. .
Core 1: Computer Network
For fresh graduates and developers with little work experience, there are more questions about computer network-related content, especially the protocols involved, such as http, https, tcp, udp, arp, icmp, three-way handshake Wave four times and so on. In the interview at a large factory, computer networks are a must. So what do you need to learn if you want to get this part?
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Core Two: Operating System
Regarding the part of the operating system, there are not many questions, mainly because this part asks about the same questions, such as thread communication, the difference between threads and processes, process scheduling algorithms, virtual memory, and physical Memory, etc. Therefore, in this regard, I have also sorted out some relatively core content.
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Core 3: MySQL
Needless to say, MySQL is basically impossible regardless of the database, especially the current Internet companies, which basically use MySQL. The most common question of MySQL is indexing, locking and optimization methods. Of course, it may be Ask you some commands, such as viewing SQL execution plan, the difference between engines, the advantages and disadvantages of auto-incrementing the primary key, B+ tree, etc.
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Core 4: Linux
In fact, during the spring recruitment period, I had already voted for Tencent. One of the reasons for the failure was Linux. The interviewer asked me Linux, and I was almost confused. In the Linux part, the most frequently asked questions are commands related to processes and networks, and there are also commands related to troubleshooting, zombie processes, orphan processes, etc.
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Core Five: Java
As my main language, Java post is inevitable to learn in depth, but there are too many things to master, such as collection of source code, reflection, multi-threading, virtual machine, etc., here is also a purpose to master the content of Java A comprehensive arrangement for reference.
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Core Six: JVM
JVM is a foundation that a developer needs to master, and it is also a very important foundation. When we interviewed, the JVM part was asked a lot, especially the garbage collection part, but in fact, the details of JVM are far More than that, the level of JVM to master at least includes these parts of the following figure.
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Core Seven: Redis
Interviews will also examine actual projects, and Redis is used in many projects because it is easy to use. However, Redis has a lot of theoretical content, and the principles must be studied in depth. So what should Redis review? At least the following must be mastered.
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Core Eight: Message Queuing and Distributed
The first and second sides of the interview will generally ask questions based on your actual project situation. My project involves message queues, so I also specially prepared the message queue part before the interview. The main points involved in the message queue include message queues, distributed locks, sub-databases and sub-tables, etc. I also specially compiled a brain map for these contents. It is basically no problem to review the main points on the map.
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Core 9: Website optimization related
When the scale of our website is relatively large, at this time, we need to consider a lot, and we need a variety of optimizations, such as caching, database sub-table, load balancing, etc. Regarding the issue of website size, In fact, I have also been asked several times. For example, when we usually visit Zhihu, sometimes a certain question is very popular, and it will become hundreds of millions of times. How will we come out of this problem? How to optimize?
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In fact, in addition to these nine core topics, I also compiled a collection of other related technical points, such as Spring Family Bucket, Tuning, BAT and other first-line Internet companies interview questions. This will not be listed one by one. Message me privately.
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to sum up
I hope that you, who are also developers, can calm down and study hard. If you also aim at a large factory, as long as you can persist, I believe that entering a large factory is only a matter of time.
Mind maps, documents, pdfs, etc. involved in these nine core knowledge points are freely shared , and the nine core topics can be obtained directly by following the official account below.
