At the moment of the epidemic, the wave of layoffs, anxiety and uneasiness are flooding this golden three silver four.
At this time, various external changes have increasingly proved an important point: the importance of continuously improving personal value.
It is not a simple accumulation of numbers at the salary level, but a person's breakthroughs and ability building in the workplace, in the professional field, and in technology, so as to build his own personal value.
Even in the face of layoffs, it still has irreplaceable competitiveness; in the face of crisis, it may encounter new opportunities and better choices.
Big changes may also have great opportunities, so don't give up learning and advancement at any time.
Here I would like to share with you a copy of the core Java knowledge points compiled by the master and the knowledge points often asked by the interviewer ! Whether it's ready to start again, or armed to go into battle, I hope it can help everyone.
This information is first published in 2022. It took the master a month to organize a total of 15 chapters , including Java basics, JVM, Mysql, concurrency, Spring, Mybatis, Redis, RocketMQ, Kafka, Zookeeper, Netty, Dubbo, ElasticSearch , Flink, Spring Boot, Spring Cloud, high concurrent projects, big data series, data structure and algorithm, design pattern, network and operating system and other 20 technology stack interview questions and detailed documents.
Data organization is not easy! There is also a lot of content, if you need it, you can forward it + follow it at the end of the article, it is free for a limited time.
01
Redis
Including: 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, etc.
02
Distributed articles
Including: distributed architecture principle, cluster architecture principle, distributed lock, distributed transaction, distributed protocol, distributed configuration, massive data sub-database sub-table, distributed scheduling, etc.
03
Design Patterns
Including: singleton mode, factory mode, abstract factory mode, builder mode, prototype mode, adapter mode, decorator mode, proxy mode and other 23 design modes
04
Data Structure and Algorithm
Including: red-black tree, B+ tree, greedy algorithm, hash divide and conquer method, seven search algorithms, dynamic programming, consensus algorithm, etc.
05
MQ articles
Including: message loss, repeated message consumption, message disorder, message backlog, delay queue, message backtracking consumption, message flushing mechanism, MQ middleware cluster architecture principles, etc.
06
Netty articles
Including: BIO, NIO and AIO threading models, Netty threading model, serialization protocol protobuf, sticky packet unpacking problem, Netty heartbeat mechanism, direct memory and Netty zero copy, WebSocket protocol, etc.
07
Zookeeper articles
Including: ZooKeeper election mechanism, ZooKeeper data model, ZooKeeper application scenarios, etc.
08
ElasticSearch篇
Including: ElasticSearch data model, ElasticSearch distributed architecture, ElasticSearch data reading and writing principles and segment merging, etc.
09
Network and Operating System
Including: network protocol, TCP/IP system structure, TCP/IP protocol family, common interview questions, etc.
10
JVM articles
Including: JVM class loading mechanism, JVM memory model, garbage collection mechanism, class bytecode implementation mechanism, JVM tuning cases, GC log details, etc.
11
Java concurrent programming
Including: java memory model, concurrent collection, thread pool, blocking queue, CAS and atomic operation, lock-free concurrent framework Disruptor, etc.
12
Spring
Including: spring IOC, spring AOP principle, spring 5, springMVC, transaction management, circular dependency, spring design pattern, etc.
13
Mysql
Including: SQL execution principle, index underlying mechanism, SQL execution plan analysis, Mysql lock mechanism, Mysql transaction isolation, SQL optimization practice, etc.
14
SpringCloud篇
Including: service discovery and registration Eureka and Nacos, service current limiting fuse downgrade Hystrix and Sentinel, distributed transaction Seata, gateway Gateway, etc.
15
Dubbo articles
Including: Dubbo foundation, architecture design, cluster, configuration, communication protocol, SPI, etc.
Due to the limited space, only part of the content is shown here.
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