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.

Title: One-sentence evaluation
Java Core Technology Needless to say, one of the most influential and valuable books in the Java field
Ideas for Java Programming This one needs no introduction. It’s a timeless classic
The Art of Concurrent Programming in Java Domestic authors write concurrent Java books, relatively simple and easy to understand, widely circulated Java thread state changes map from this book
In-depth Understanding of the Java Virtual Machine JVM, this one is enough
“Effective Java” Known as the Magic Book of Java Programming Ideas, it explains how to write robust, efficient code, although some development experience is required.
Spring In Action Spring Introduction classic book
Spring Revealed The book is older, but the concept and principle is very clear, after reading, look at the source code of Spring5 is also very good
Spring Boot 2.x Read a lot of SpringBoot books, personal feeling this is good, more detailed, comprehensive
MyBatis Technology Insider MyBatis source code analysis of the book is not many, recommend this, combined with the source code to read better
Data Structure and Algorithm Analysis Foreign data structure and algorithm analysis of the classic textbook, the content is comprehensive, rigorous and strict
Computer Network I can’t help but recommend a textbook, which is comprehensive and systematic, but may not be friendly to non-koji players
Illustrated HTTP This need not introduce more, very vivid explain HTTP protocol book, read more friendly
Understanding Computer Systems in Depth A well-reviewed book on computer operating systems, but the black book can be difficult to read
SQL Must Know must Know Very popular MySQL primer, can also be used as a reference book
High Performance MySQL MySQL domain classic, advanced must see
Redis Development and Operation From the development, operation and maintenance of two aspects of Redis combat experience, in-depth analysis of the underlying implementation, including large-scale cluster development and operation and maintenance of actual cases
Redis Design and Implementation Redis Advanced Classic books
SpringCloud Micro-service Combat Nice SpringCloud book
Spring Cloud Alibaba Micro Service Principle and Practice Some components of Netflex are in maintenance, Spring Cloud Alibaba is popular recently (technology changes really fast), there are not many books on this topic, this one is relatively recommended
RabbitMQ Field Guide Simple and clear RabbitMQ technical book
The Definitive Guide to Kafka There are plenty of great Kafka books out there. Here’s a guide to Kafka
RocketMQ Field and Principles RocketMQ is short on books, but this one is a good primer and a little thin on principles

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?

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