Before the New Year, several Ali P9 level architects summarized a 2021 Golden Three Silver Four Java interview knowledge points, which can be said to cover Java basics, JVM, multithreading and high concurrency, architecture, database, data structure and Algorithms, Netty, network underlying knowledge, logs, microservices, message middleware and more!
This summary was shared with a few friends, and they have helped them get a total of 7 offers, and at the same time received their "happy news"!
The feedback from a friend with a very good relationship is really happy for him. This information can help his friend get an offer that he is very satisfied with. As a friend of mine, I am also very pleased. His increase is very high, and the increase is about At 50%, everyone knows that the general job-hopping HR is almost a 30% increase. It is really good to be able to increase by 50%!
Here is a summary of the knowledge points of the 2021 gold three silver four Java interview!
Secretly tell you that there is an interview surprise for the fans at the end of the article~
JVM summary (the article is limited in length, and the subtitles inside will not be opened for everyone to show in detail!)
JAVA collection summary
JAVA multithreading concurrency summary
The role of the volatile keyword (variable visibility, prohibit reordering)
JAVA basic summary
Summary of Spring principles
IOC container implementation
Microservice summary
Netty and RPC summary
Network summary
TCP three-way handshake/four waved hands
Log summary
Zookeeper summary
Kafka summary
RabbitMQ summary
Hbase summary
Cassandra summary
Summary of design patterns
Negative cut balance summary
Database summary
TokuDB (Fractal Tree-node with data)
Consensus algorithm summary
Algorithm summary
Data structure summary
Sorted binary tree
Encryption algorithm summary
Distributed cache summary
to sum up
Finally, I wish you all the softness of the Offer and no BUG every day! ! ! Finally, secretly tell everyone to poke this to get a 100% free copy!