learningSummary

This document provides a comprehensive knowledge summary for learning Java, structured around a technology stack mind map. It aims to guide Java learners through a structured path, minimizing detours and clarifying advancement directions. The content covers various aspects, from design patterns and concurrency to JVM internals, frameworks, and distributed systems. Star this repository if you find it helpful!

This is a summary of my knowledge of learning Java. I will improve the entire knowledge structure step by step based on the technology stack mind map below.

I hope that by sharing it with you who are learning Java, you can avoid some detours and find the direction for advancement.

If you find it useful, give it a Star and encourage it~

Icon link production comes from: https://shields.io/

Online brain map production: https://www.processon.com/

Directory (make good use of Ctrl+F)

Commonly used design patterns

Teach you how to use strategy pattern to solve multiple if-else

An article to understand the agency model

Teach you to create objects elegantly using the builder (generator) pattern

Observer pattern-Application of Spring event mechanism

Application of decorator pattern and IO stream

Prototype pattern and cloning technology

Adapter pattern and SpringMVC

Interviewer: Brother, let’s talk about the chain of responsibility model.

The art of concurrent programming

The interviewer asked me what is JMM

For multi-thread development, first learn about thread pools

Pessimistic locking and optimistic locking in concurrent programming

Detailed explanation of AQS that must be learned in concurrent programming

Stick to the underlying principle of the synchronized keyword

Review concurrency knowledge, starting with ThreadLocal

JVM core knowledge

Explain in detail! From JVM to class loader

Let’s talk about garbage collection (GC) in JVM

What to do with OOM, teach you how to generate dump files and view them

Caching service

In-depth exploration of Redis’s five basic data types

Redis-cache avalanche, cache breakdown, cache penetration

Playing with Bloom filters is actually very simple

How Redis implements distributed locks

Data Structures and Algorithms

Summary of eight classic sorting algorithms (with animation demonstration)

Classic leetcode algorithm question sharing (string)

Ten consecutive posts, Leetcode algorithm question sharing (hash table)

Excellent technical framework that must be learned

SpringMVC global exception handling mechanism

5,000 words summary of SpringMVC, I think you will need it

Hardcore! Analyzing Mybatis source code from the design pattern

What did SpringBoot do at startup? You’ll understand after reading this!

What design patterns does Spring use?

Mybatis-Plus, smells so good!

Mybatis-Plus, BaseMapper source code analysis

How to integrate multiple data sources with Mybatis-Plus?

mybatis-plus multiple data source analysis

network programming

NIO from getting started to kicking the door

Attack NIO! Reactor mode!

For a super detailed introduction to Netty, just read this article!

Netty advanced packaging and unpacking problems

If you don’t understand, just learn, what is JWT?

distributed

Getting started with ZooKeeper, just read this article

Explain in detail! From Flash Sale Chat to ZooKeeper Distributed Lock

Three thousand words to help you understand the XXL-JOB task scheduling platform

Apollo configuration center, configuration can also be "intelligent"

Don’t know what SkyWalking is? Look at this!

What is ELK? You’ll understand after reading this!

A super detailed introduction to Sentinel

This wave~ This wave is multi-environment configuration

Microservice architecture

SpringCloud Microservice: Registration Center

SpringCloud microservices: OpenFeign

Gateway is very important, learn Gateway

Gateway Service Gateway Filter

MySQL database

For a super detailed introduction to canal, just read this article

Canal+Kafka realizes data synchronization between MySQL and Redis

To learn how to separate reading and writing in MySQL master-slave replication, just read this article

Want to master SQL optimization? Then learn to explain!

Three types of MySQL logs you must know

What are dirty reads, non-repeatable reads, and phantom reads?

Let’s talk about the understanding of MySQL’s MVCC

What is Snowflake ID?

Talk about how MYSQL index improves query efficiency

middleware

Super detailed introduction to RabbitMQ

Explain in detail! RabbitMQ prevents data loss

Let me get you started with Kafka. The more you know, the more you don’t know!

Getting started with Pulsar middleware

Java basics

The basics of Java are not simple, let’s talk about enumerations

How to customize annotations in Java?

In-depth understanding of String class

The basics of Java are not simple. Let’s talk about the connection between hashCode() and equals()

The basics of Java are not simple, generics are very important!

big data

Learning big data starts with installing Hadoop (stand-alone version)

Learn MapReduce with WordCount

A few small examples about MapReduce

Pitfalls encountered

Pitfalls of List collection

Sharing of face-to-face experiences

Remember a summary of interview questions for advanced Java development