preface

Unconsciously 2021’s job-hopping gold month gold three silver four has already passed, job-hopping results some people are happy and some people worry, find a good job is gratified, job-hopping results are not ideal friends do not need to be discouraged, as long as the solid improvement of their own technology, understand the big factory interview logic, into the big factory will be natural.

Before, a fan asked me to write an article about how to enter a big factory. This is a platial issue, but as a fan like me, I can’t refuse. So today, I will not knock on the code and talk about my views on how to enter a big factory.

I also arranged the interview questions and study materials for everyone. Click on it if you need it.

• Java Basics
• Java field project source code and notes
• Learning routes and materials from 0 to 1Java
• 1000+ questions from 2021

All right, no more words, just sit tight and let’s go!

What kind of people do big factories need?

Big companies for non-high-P positions, the interview criteria are actually very simple

• Able to work
• Have a good Java foundation
• Be familiar with distributed frameworks

I believe that most of these standards are similar

Some time ago, I conducted a mock interview for some fans, with work experience of 3 to 5 years.

There are many candidates who are not poor in ability, but are not prepared or able to speak up during the interview. Such people may indeed meet expectations after joining the team, but they may not pass the interview, and the interviewer will always judge them based on the interview.

But the reality is that most people probably don’t prepare for an interview, or prepare in the wrong way. You know, we usually work more focused on business, so we are not likely to be exposed to a lot of algorithms, data structures, underlying code and other interview questions. In other words, the interview preparation points and the main points of the job do not match.

The results of the latter interviews were not as bad as I expected

So I’ve put together a list of things to look for in an interview:

• Frameworks are important, but don’t look like you’re just copying someone else’s code
• Don’t just look at the standalone version of the framework, the appropriate understanding of some distributed
• Database, don’t just know add, delete, change, check, understand performance optimization
• Core aspects of Java, around data structure and performance optimization to prepare interview questions
• On Linux, at least know how to look at logs to troubleshoot problems
• Read through some of the underlying code as a bonus
• All in all, embed these skills in the projects you’ve done

How to get into the big factory?

In addition to their own technical excellent brush questions must be essential, many people know into the big factory to brush questions, but how to brush?

Most people do not know, just blindly on the Internet to find the so-called latest interview real brush, and then interview GG.

So here to give you some suggestions to brush the question, brush the question in addition to find the right question you also have to understand what this question is to rely on, as long as you understand this, this question you will be able to, after all, you can not put hope on the interview questions are all you brush

Algorithm problem

The written test is usually the original leetcode or adapted; Interview questions can also be difficult. Zero basis can look at Java data structures and algorithms, do not look at Scala, generally do not use scala brush questions; You can go to @labuladong to get << Labuladong algorithm cheat sheet >>. Also, try to do it by category.

SQL problem

SQL questions may also be out, if you do not understand, you can look at the B station up main Java club introduction, do not build the environment, familiar with SQL statements, and then go to Leetcode or cattle brush questions.

Big data simple problems

For example, top-10 and wordcount.

The interview basis

It is divided into two parts, one is Java foundation and computer foundation (such as network, database, operating system, etc.); On the other side are Linux and Hadoop, ZooKeeper, Hive, Flume, Kafka, HBase, Spark, Flink and other big data frameworks.

The two notes of TALKDATA correspond to these two aspects, each of which has about 100 questions and answers. The answers of some questions are more in-depth and low-level, such as HDFS source code analysis. I haven’t read much, because it takes time to understand the low-level. Here is mainly to see the video first, combined with the documentation, not all. After learning, you can see the interview questions on the Internet according to need. I also sorted out some questions and can obtain them by myself.

Everyone will be asked different questions, so prepare a framework in which you want to be asked (familiar).

If you don’t have a solid Java foundation, you can check out this 21000 word summary of Java basics I wrote before. If you need a PDF document, you can also ask me for it

See the video

Mainly Java zero basic introduction, MySQL foundation, Java data structure and algorithm; Big data includes Linux (Shell can be skipped), Hadoop, ZooKeeper, Kafka, Spark, Flink and so on. It is mainly about mastering the framework used in the project, and understanding some basic information about other projects.

For video, I also set up a number in B station – Java Club, usually upload some technology stack practical application, interview topic explanation and simulation interview video, etc., interested friends can pay attention to a wave

navigating

It is not necessary, the school recruitment is mainly the basis, if more in-depth can read books, do not recommend reading.

For books, I have compiled 22 Java Architect core learning books, all of which are available in digital files for free sharing.

Click here to pick up the 22 Java Architect Core books

Often the key

• Java: Java basics, collection classes, JVM, JUC, etc.

• Hadoop: components, MapReduce processes, Shuffle, and high availability.

• Spark: RDD, shared variables, data skew, overall flow, shuffle, and fault tolerance.

• Hive: architecture, differences with databases, partitioning, bucket sorting, and window opening functions.

• HBase: architecture, read/write process, and Rowkey setting.

• Kafka: Architecture, message ordering, Spark Streaming and Kafka connections, message loss and repetition, producer and consumer related issues, etc.

project

Generally, two or more projects are required. Try not to use only Hadoop projects. It is better to choose Spark or Flink projects if you are looking for Hive projects.

If the intern is actually don’t have to go to importune project experience, the interviewer will have you worth company to develop potential, and then how to see your potential, is the Java foundation is not solid, so the intern to into companies should be more focused on the foundation, a solid, of course, can have a good of project experience is a plus.

For those of you who don’t have a practice project, you can check out the 100 Java projects I wrote earlier, with source code and learning documents! Source code and learning documents are available,

Writing here is almost the same, if there is any doubt about Java learning or big factory interview, welcome to communicate with me, see will reply.

Finally, can you see the official point a “like” and a concern?

end