Outsourcing for four years, abandoned

Let's talk about our situation first , Junior college students ,18 In, he entered a software company in Hunan through school recruitment , It's close 4 Year of CRUD, At the beginning of the year , I feel like I can't go on like this , Staying in a comfortable environment for a long time can make a person degenerate ! And I have worked in an enterprise for four years CRUD, It's made me less enterprising , Talked about 2 My girlfriend, who has been living for more than 20 years, broke up with me because of my mentality and salary . therefore , I decided to change the status quo , Look at this year's golden three silver four !

At the beginning of preparation , I've been blinded , Four years CRUD I didn't make any progress in my technology , Only my age has been promoted ...

Can't , I found my brother in Tencent , As his little old watch , After he learned about me ( Almost Java The foundation begins ), Just throw me a net disk , Speaking of ：“ Go for it , Here's everything you need , Don't come to me , I think it's embarrassing !”.

This set of information is also free for everyone to see , The document is PDF file , I hope it will be helpful for you to find a job interview .

First show some screenshots , Free download at the end of the article

One 、JVM piece (2022)

( contain ：JVM Class loading mechanism ,JVM Memory model , Garbage collection mechanism , Class bytecode implementation mechanism ,JVM Tuning case ,GC Detailed log explanation, etc )

Two 、Java Concurrent programming (2022)

( contain ：java Memory model , Concurrent sets , Thread pool , Blocking queues ,CAS And atomic manipulation , Lock free concurrency framework Disruptor etc. )

3、 ... and 、Spring piece (2022)

( contain ：spring IOC,spring AOP principle ,spring 5,springMVC, Business management , Cyclic dependence ,spring Design mode, etc )

Four 、Mysql piece (2022)

( contain ：SQL Execution principle , The underlying indexing mechanism ,SQL Perform plan analysis ,Mysql Locking mechanism ,Mysql The transaction isolation ,SQL Optimization practice, etc )

5、 ... and 、SpringCloud piece (2022)

( contain ： Service discovery and registration Eureka And Nacos, Service current limiting fuse is degraded Hystrix And Sentinel, Distributed transactions Seata, gateway Gateway etc. )

6、 ... and 、Dubbo piece (2022)

( contain ：Dubbo Basics , Architecture design , colony , To configure , Communication protocol ,SPI etc. )

7、 ... and 、Redis piece (2022)

( contain ：Redis Core data structure ,Redis Persistence mechanism and security mechanism , Sentinel and cluster architecture ,Redis Cache penetration , Cache invalidation , Cache avalanche ,Redis Cache design and performance optimization )

8、 ... and 、 Distributed article (2022)

( contain ： The principle of distributed architecture , Cluster architecture principle , Distributed lock , Distributed transactions , Distributed protocol , Distributed configuration , Massive data is divided into databases and tables , Distributed scheduling , etc. )

Nine 、 Design patterns (2022)

( contain ： The singleton pattern , Factory mode , Abstract factory pattern , Builder pattern , Archetypal model , Adapter pattern , Decorator mode , Agent mode, etc 23 Design patterns )

Ten 、 Data structure and algorithm (2022)

( contain ： Red and black trees ,B+ Trees , Greedy Algorithm , Hash divide and conquer , Seven search algorithms , Dynamic programming , Consistency algorithm, etc )

11、 ... and 、MQ piece (2022)

( contain ： Lost message , Message re consumption , The news is out of order , There's a backlog of news , Delay queue , News backtracking consumption , Message refresh mechanism ,MQ Middleware cluster architecture principle, etc )

Twelve 、Netty piece (2022)

( contain ：BIO、NIO And AIO Threading model ,Netty Threading model , Serialization protocol protobuf, Sticking and unpacking ,Netty heartbeat , Direct memory and Netty Zero copy ,WebSocket Agreements, etc )

13、 ... and 、Zookeeper piece (2022)

( contain ：ZooKeeper The election mechanism ,ZooKeeper Data model ,ZooKeeper Application scenarios, etc )

fourteen 、ElasticSearch piece (2022)

( contain ：ElasticSearch Data model 、ElasticSearch Distributed architecture 、ElasticSearch Data reading and writing principle and segment merging, etc )

15、 ... and 、 Network and operating system (2022)

( contain ： Network protocol ,TCP/IP System structure ,TCP/IP Protocol family , Frequently asked questions , etc. )

For all the information, please click the business card below , Long press or scan the code to add my free collection .