3 years of work experience, full of confidence and beating, I never thought it would be too difficult to dig out the details like this

Today’s question: When did you find that your skills were too weak?

Yes, it was during the interview.

Yesterday, a classmate told me that he had been working for 3 years and he was particularly confident to go to the face and beating, but he did not expect it to be too difficult to dig out the details:

What is a distributed lock?

How to implement distributed locks?

What are the stand-alone locks? Why can't it be used in a distributed environment?

How does Redis implement distributed locks? What problems might you encounter?

What is the problem if the distributed lock uses timeout? How to solve?

…………

During the interview, eight out of ten companies will keep asking questions like a byte beating.  If you usually only pay attention to the project can run, do not pay attention to the principles and details of the underlying technology, face these interview questions, you will definitely be at a loss, 80% can not get an offer.

If this is true for you, I suggest you to deeply understand the principles of the underlying technology and cultivate your own architectural thinking and ability. Of course, this is not something that can be done in an instant, so I strongly recommend that you spend 2 hours a week after work to  learn this advanced technology of Internet Java architecture corresponding to Ali P7 , and use the shortest time to improve your own Technical ability, quickly get the offer from these big factories by ByteDance!

Architect foundation skills

The Internet company has four axes on one side: Java concurrency, JVM, data organization, network programming! Now 90% of the job requirements in the interview must be a solid foundation in JAVA: proficiency in data structures, multi-threaded programming, and common design patterns; familiar with JVM, including memory model, class loading mechanism, and performance optimization; familiar with Tomcat, Mysq| Wait for the server, be familiar with performance optimization under high concurrency; be familiar with multi-threaded network programming, distributed caching, serialization, NIO and related framework netty\mina, etc., have relevant practical experience.

Source code analysis

Distributed architecture technology

Microservice architecture technology

Essential performance tuning for major manufacturers

First-line Internet distributed scenario solution

In view of the above technical system, here is also prepared this Java architecture advanced learning knowledge notes to help friends in need to learn, this document is free to share, friends in need (click here) to get the notes for free collection method!

Here is a screenshot of the catalog and content of this information

JVM

JAVA collection

JAVA multithreaded concurrency

JAVA basics

Spring principle

Microservice

Netty 与RPC

Distributed cache

The internet

Log

Zookeeper

Kafka

RabbitMQ

Hbase

Cassandra

Design Patterns

Load balancing

database

Consensus algorithm

JAVA algorithm

data structure

Encryption Algorithm

Hadoop

Spark

Storm

cloud computing