JavaGuide

- 推荐在线阅读（体验更好，速度更快）：[javaguide.cn](https://javaguide.cn/)
- 面试突击版本（只保留重点，附带精美 PDF 下载）：[interview.javaguide.cn](https://interview.javaguide.cn/)

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[![logo](https://oss.javaguide.cn/github/javaguide/csdn/1c00413c65d1995993bf2b0daf7b4f03.png)](https://github.com/Snailclimb/JavaGuide)

[GitHub](https://github.com/Snailclimb/JavaGuide) | [Gitee](https://gitee.com/SnailClimb/JavaGuide)

<a href="https://trendshift.io/repositories/1319" target="_blank"><img src="https://trendshift.io/api/badge/repositories/1319" alt="Snailclimb%2FJavaGuide | Trendshift" style="width: 250px; height: 55px;" width="250" height="55"/></a>

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> - **大模型实战项目**： [⭐AI 智能面试辅助平台 + RAG 知识库](https://javaguide.cn/zhuanlan/interview-guide.html)（基于 Spring Boot 4.0 + Java 21 + Spring AI 2.0 ，非常适合作为学习和简历项目，学习门槛低）。
> - **面试资料补充**：
>   - [《Java 面试指北》](https://javaguide.cn/zhuanlan/java-mian-shi-zhi-bei.html)：四年打磨，和 [JavaGuide 开源版](https://javaguide.cn/)的内容互补，带你从零开始系统准备面试！
>   - [《后端面试高频系统设计&场景题》](https://javaguide.cn/zhuanlan/back-end-interview-high-frequency-system-design-and-scenario-questions.html)：30+ 道高频系统设计和场景面试，助你应对当下中大厂面试趋势。
> - **使用建议** ：如果你想要系统准备 Java 后端面试但又不知道如何开始的，可以参考 [Java 后端面试通关计划（后端通用）](https://javaguide.cn/interview-preparation/backend-interview-plan.html)。
> - **求个 Star**：如果觉得 JavaGuide 的内容对你有帮助的话，还请点个免费的 Star，这是对我最大的鼓励，感谢各位一起同行，共勉！传送门：[GitHub](https://github.com/Snailclimb/JavaGuide) | [Gitee](https://gitee.com/SnailClimb/JavaGuide)。
> - **转载须知**：以下所有文章如非文首说明为转载皆为 JavaGuide 原创，转载请在文首注明出处。如发现恶意抄袭/搬运，会动用法律武器维护自己的权益。让我们一起维护一个良好的技术创作环境！

<!-- #region home -->

## AI 应用开发面试指南

[AI 应用开发面试指南](https://javaguide.cn/ai/)（⭐新增，正在持续更新）：专门后端开发准备的 AI 应用开发核心知识，涵盖大模型基础、Agent、RAG、MCP 协议等高频面试考点。

### AI Agent

- [一文搞懂 AI Agent 核心概念](./docs/ai/agent/agent-basis.md)
- [大模型提示词工程实践指南](./docs/ai/agent/prompt-engineering.md)
- [上下文工程实战指南](./docs/ai/agent/context-engineering.md)
- [万字详解 Agent Skills](./docs/ai/agent/skills.md)
- [万字拆解 MCP 协议](./docs/ai/agent/mcp.md)
- [一文搞懂 Harness Engineering](./docs/ai/agent/harness-engineering.md)
- [AI 工作流中的 Workflow、Graph 与 Loop](./docs/ai/agent/workflow-graph-loop.md)

## 面试准备

- [⭐Java 后端面试通关计划（涵盖后端通用体系）](./docs/interview-preparation/backend-interview-plan.md) (一定要看 :+1:)
- [如何高效准备 Java 面试？](./docs/interview-preparation/teach-you-how-to-prepare-for-the-interview-hand-in-hand.md)
- [Java 后端面试重点总结](./docs/interview-preparation/key-points-of-interview.md)
- [Java 学习路线（最新版，4w+ 字）](./docs/interview-preparation/java-roadmap.md)
- [程序员简历编写指南](./docs/interview-preparation/resume-guide.md)
- [项目经验指南](./docs/interview-preparation/project-experience-guide.md)
- [面试太紧张怎么办？](./docs/interview-preparation/how-to-handle-interview-nerves.md)
- [校招没有实习经历怎么办？实习经历怎么写？](./docs/interview-preparation/internship-experience.md)

## Java

### 基础

**知识点/面试题总结** : (必看:+1: )：

- [Java 基础常见知识点&面试题总结(上)](./docs/java/basis/java-basic-questions-01.md)
- [Java 基础常见知识点&面试题总结(中)](./docs/java/basis/java-basic-questions-02.md)
- [Java 基础常见知识点&面试题总结(下)](./docs/java/basis/java-basic-questions-03.md)

**重要知识点详解**：

- [为什么 Java 中只有值传递？](./docs/java/basis/why-there-only-value-passing-in-java.md)
- [Java 序列化详解](./docs/java/basis/serialization.md)
- [泛型&通配符详解](./docs/java/basis/generics-and-wildcards.md)
- [Java 反射机制详解](./docs/java/basis/reflection.md)
- [Java 代理模式详解](./docs/java/basis/proxy.md)
- [BigDecimal 详解](./docs/java/basis/bigdecimal.md)
- [Java 魔法类 Unsafe 详解](./docs/java/basis/unsafe.md)
- [Java SPI 机制详解](./docs/java/basis/spi.md)
- [Java 语法糖详解](./docs/java/basis/syntactic-sugar.md)

### 集合

**知识点/面试题总结**：

- [Java 集合常见知识点&面试题总结(上)](./docs/java/collection/java-collection-questions-01.md) (必看 :+1:)
- [Java 集合常见知识点&面试题总结(下)](./docs/java/collection/java-collection-questions-02.md) (必看 :+1:)
- [Java 容器使用注意事项总结](./docs/java/collection/java-collection-precautions-for-use.md)

**源码分析**：

- [ArrayList 核心源码+扩容机制分析](./docs/java/collection/arraylist-source-code.md)
- [LinkedList 核心源码分析](./docs/java/collection/linkedlist-source-code.md)
- [HashMap 核心源码+底层数据结构分析](./docs/java/collection/hashmap-source-code.md)
- [ConcurrentHashMap 核心源码+底层数据结构分析](./docs/java/collection/concurrent-hash-map-source-code.md)
- [LinkedHashMap 核心源码分析](./docs/java/collection/linkedhashmap-source-code.md)
- [CopyOnWriteArrayList 核心源码分析](./docs/java/collection/copyonwritearraylist-source-code.md)
- [ArrayBlockingQueue 核心源码分析](./docs/java/collection/arrayblockingqueue-source-code.md)
- [PriorityQueue 核心源码分析](./docs/java/collection/priorityqueue-source-code.md)
- [DelayQueue 核心源码分析](./docs/java/collection/delayqueue-source-code.md)

### IO

- [IO 基础知识总结](./docs/java/io/io-basis.md)
- [IO 设计模式总结](./docs/java/io/io-design-patterns.md)
- [IO 模型详解](./docs/java/io/io-model.md)
- [NIO 核心知识总结](./docs/java/io/nio-basis.md)

### 并发

**知识点/面试题总结** : (必看 :+1:)

- [Java 并发常见知识点&面试题总结（上）](./docs/java/concurrent/java-concurrent-questions-01.md)
- [Java 并发常见知识点&面试题总结（中）](./docs/java/concurrent/java-concurrent-questions-02.md)
- [Java 并发常见知识点&面试题总结（下）](./docs/java/concurrent/java-concurrent-questions-03.md)

**重要知识点详解**：

- [乐观锁和悲观锁详解](./docs/java/concurrent/optimistic-lock-and-pessimistic-lock.md)
- [CAS 详解](./docs/java/concurrent/cas.md)
- [JMM（Java 内存模型）详解](./docs/java/concurrent/jmm.md)
- **线程池**：[Java 线程池详解](./docs/java/concurrent/java-thread-pool-summary.md)、[Java 线程池最佳实践](./docs/java/concurrent/java-thread-pool-best-practices.md)
- [ThreadLocal 详解](./docs/java/concurrent/threadlocal.md)
- [Java 并发容器总结](./docs/java/concurrent/java-concurrent-collections.md)
- [Atomic 原子类总结](./docs/java/concurrent/atomic-classes.md)
- [AQS 详解](./docs/java/concurrent/aqs.md)
- [CompletableFuture 详解](./docs/java/concurrent/completablefuture-intro.md)

### JVM (必看 :+1:)

JVM 这部分内容主要参考 [JVM 虚拟机规范-Java8](https://docs.oracle.com/javase/specs/jvms/se8/html/index.html) 和周志明老师的[《深入理解 Java 虚拟机（第 3 版）》](https://book.douban.com/subject/34907497/) （强烈建议阅读多遍！）。

- **[Java 内存区域](./docs/java/jvm/memory-area.md)**
- **[JVM 垃圾回收](./docs/java/jvm/jvm-garbage-collection.md)**
- [类文件结构](./docs/java/jvm/class-file-structure.md)
- **[类加载过程](./docs/java/jvm/class-loading-process.md)**
- [类加载器](./docs/java/jvm/classloader.md)
- [【待完成】最重要的 JVM 参数总结（翻译完善了一半）](./docs/java/jvm/jvm-parameters-intro.md)
- [【加餐】大白话带你认识 JVM](./docs/java/jvm/jvm-intro.md)
- [JDK 监控和故障处理工具](./docs/java/jvm/jdk-monitoring-and-troubleshooting-tools.md)

### 新特性

- **Java 8**：[Java 8 新特性总结（翻译）](./docs/java/new-features/java8-tutorial-translate.md)、[Java8 常用新特性总结](./docs/java/new-features/java8-common-new-features.md)
- [Java 9 新特性概览](./docs/java/new-features/java9.md)
- [Java 10 新特性概览](./docs/java/new-features/java10.md)
- [Java 11 新特性概览](./docs/java/new-features/java11.md)
- [Java 12 & 13 新特性概览](./docs/java/new-features/java12-13.md)
- [Java 14 & 15 新特性概览](./docs/java/new-features/java14-15.md)
- [Java 16 新特性概览](./docs/java/new-features/java16.md)
- [Java 17 新特性概览](./docs/java/new-features/java17.md)
- [Java 18 新特性概览](./docs/java/new-features/java18.md)
- [Java 19 新特性概览](./docs/java/new-features/java19.md)
- [Java 20 新特性概览](./docs/java/new-features/java20.md)
- [Java 21 新特性概览](./docs/java/new-features/java21.md)
- [Java 22 & 23 新特性概览](./docs/java/new-features/java22-23.md)
- [Java 24 新特性概览](./docs/java/new-features/java24.md)
- [Java 25 新特性概览](./docs/java/new-features/java25.md)

## 计算机基础

### 操作系统

- [操作系统常见知识点&面试题总结(上)](./docs/cs-basics/operating-system/operating-system-basic-questions-01.md)
- [操作系统常见知识点&面试题总结(下)](./docs/cs-basics/operating-system/operating-system-basic-questions-02.md)
- **Linux**：
  - [后端程序员必备的 Linux 基础知识总结](./docs/cs-basics/operating-system/linux-intro.md)
  - [Shell 编程基础知识总结](./docs/cs-basics/operating-system/shell-intro.md)

### 网络

**知识点/面试题总结**：

- [计算机网络常见知识点&面试题总结(上)](./docs/cs-basics/network/other-network-questions.md)
- [计算机网络常见知识点&面试题总结(下)](./docs/cs-basics/network/other-network-questions2.md)
- [谢希仁老师的《计算机网络》内容总结（补充）](./docs/cs-basics/network/computer-network-xiexiren-summary.md)

**重要知识点详解**：

- [OSI 和 TCP/IP 网络分层模型详解（基础）](./docs/cs-basics/network/osi-and-tcp-ip-model.md)
- [应用层常见协议总结（应用层）](./docs/cs-basics/network/application-layer-protocol.md)
- [HTTP vs HTTPS（应用层）](./docs/cs-basics/network/http-vs-https.md)
- [HTTP 1.0 vs HTTP 1.1（应用层）](./docs/cs-basics/network/http1.0-vs-http1.1.md)
- [HTTP 常见状态码（应用层）](./docs/cs-basics/network/http-status-codes.md)
- [DNS 域名系统详解（应用层）](./docs/cs-basics/network/dns.md)
- [TCP 三次握手和四次挥手（传输层）](./docs/cs-basics/network/tcp-connection-and-disconnection.md)
- [TCP 传输可靠性保障（传输层）](./docs/cs-basics/network/tcp-reliability-guarantee.md)
- [ARP 协议详解(网络层)](./docs/cs-basics/network/arp.md)
- [NAT 协议详解(网络层)](./docs/cs-basics/network/nat.md)
- [网络攻击常见手段总结（安全）](./docs/cs-basics/network/network-attack-means.md)

### 数据结构

**图解数据结构：**

- [线性数据结构 :数组、链表、栈、队列](./docs/cs-basics/data-structure/linear-data-structure.md)
- [图](./docs/cs-basics/data-structure/graph.md)
- [堆](./docs/cs-basics/data-structure/heap.md)
- [树](./docs/cs-basics/data-structure/tree.md)：重点关注[红黑树](./docs/cs-basics/data-structure/red-black-tree.md)、B-，B+，B\*树、LSM 树

其他常用数据结构：

- [布隆过滤器](./docs/cs-basics/data-structure/bloom-filter.md)

### 算法

算法这部分内容非常重要，如果你不知道如何学习算法的话，可以看下我写的：

- [算法学习书籍+资源推荐](https://www.zhihu.com/question/323359308/answer/1545320858) 。
- [如何刷 Leetcode?](https://www.zhihu.com/question/31092580/answer/1534887374)

**常见算法问题总结**：

- [几道常见的字符串算法题总结](./docs/cs-basics/algorithms/string-algorithm-problems.md)
- [几道常见的链表算法题总结](./docs/cs-basics/algorithms/linkedlist-algorithm-problems.md)
- [剑指 offer 部分编程题](./docs/cs-basics/algorithms/the-sword-refers-to-offer.md)
- [十大经典排序算法](./docs/cs-basics/algorithms/10-classical-sorting-algorithms.md)

另外，[GeeksforGeeks](https://www.geeksforgeeks.org/fundamentals-of-algorithms/) 这个网站总结了常见的算法 ，比较全面系统。

## 数据库

### 基础

- [数据库基础知识总结](./docs/database/basis.md)
- [NoSQL 基础知识总结](./docs/database/nosql.md)
- [字符集详解](./docs/database/character-set.md)
- SQL :
  - [SQL 语法基础知识总结](./docs/database/sql/sql-syntax-summary.md)
  - [SQL 常见面试题总结](./docs/database/sql/sql-questions-01.md)

### MySQL

**知识