- 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/) <div align="center"> [](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> </div> > - **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 **知识点/面试题总结：** - **[MySQL 常见知识点&面试题总结](./docs/database/mysql/mysql-questions-01.md)** (必看 :+1:) - [MySQL 高性能优化规范建议总结](./docs/database/mysql/mysql-high-performance-optimization-specification-recommendations.md) **重要知识点：** - [MySQL 索引详解](./docs/database/mysql/mysql-index.md) - [MySQL 索引失效场景总结](./docs/database/mysql/mysql-index-invalidation.md) - [MySQL 事务隔离级别图文详解)](./docs/database/mysql/transaction-isolation-level.md) - [MySQL 三大日志(binlog、redo log 和 undo log)详解](./docs/database/mysql/mysql-logs.md) - [InnoDB 存储引擎对 MVCC 的实现](./docs/database/mysql/innodb-implementation-of-mvcc.md) - [SQL 语句在 MySQL 中的执行过程](./docs/database/mysql/how-sql-executed-in-mysql.md) - [MySQL 查询缓存详解](./docs/database/mysql/mysql-query-cache.md) - [MySQL 执行计划分析](./docs/database/mysql/mysql-query-execution-plan.md) - [MySQL 自增主键一定是连续的吗](./docs/database/mysql/mysql-auto-increment-primary-key-continuous.md) - [MySQL 时间类型数据存储建议](./docs/database/mysql/some-thoughts-on-database-storage-time.md) - [MySQL 隐式转换造成索引失效](./docs/database/mysql/index-invalidation-caused-by-implicit-conversion.md) ### Redis **知识点/面试题总结** : (必看:+1: )： - [Redis 常见知识点&面试题总结(上)](./docs/database/redis/redis-questions-01.md) - [Redis 常见知识点&面试题总结(下)](./docs/database/redis/redis-questions-02.md) **重要知识点：** - [3 种常用的缓存读写策略详解](./docs/database/redis/3-commonly-used-cache-read-and-write-strategies.md) - [Redis 能做消息队列吗？怎么实现？](./docs/database/redis/redis-stream-mq.md) - [Redis 5 种基本数据结构详解](./docs/database/redis/redis-data-structures-01.md) - [Redis 3 种特殊数据结构详解](./docs/database/redis/redis-data-structures-02.md) - [Redis 持久化机制详解](./docs/database/redis/redis-persistence.md) - [Redis 内存碎片详解](./docs/database/redis/redis-memory-fragmentation.md) - [Redis 常见阻塞原因总结](./docs/database/redis/redis-common-blocking-problems-summary.md) - [Redis 集群详解](./docs/database/redis/redis-cluster.md) ### MongoDB - [MongoDB 常见知识点&面试题总结(上)](./docs/database/mongodb/mongodb-questions-01.md) - [MongoDB 常见知识点&面试题总结(下)](./docs/database/mongodb/mongodb-questions-02.md) ## 搜索引擎 [Elasticsearch 常见面试题总结(付费)](./docs/database/elasticsearch/elasticsearch-questions-01.md)  ## 开发工具 ### Maven - [Maven 核心概念总结](./docs/tools/maven/maven-core-concepts.md) - [Maven 最佳实践](./docs/tools/maven/maven-best-practices.md) ### Gradle [Gradle 核心概念总结](./docs/tools/gradle/gradle-core-concepts.md)（可选，目前国内还是使用 Maven 普遍一些） ### Docker - [Docker 核心概念总结](./docs/tools/docker/docker-intro.md) - [Docker 实战](./docs/tools/docker/docker-in-action.md) ### Git - [Git 核心概念总结](./docs/tools/git/git-intro.md) - [GitHub 实用小技巧总结](./docs/tools/git/github-tips.md) ## 系统设计 - [⭐系统设计常见面试题总结](./docs/system-design/system-design-questions.md) - [⭐设计模式常见面试题总结](https://interview.javaguide.cn/system-design/design-pattern.html) ### 基础 - [RestFul API 简明教程](./docs/system-design/basis/RESTfulAPI.md) - [软件工程简明教程](./docs/system-design/basis/software-engineering.md) - [代码命名指南](./docs/system-design/basis/naming.md) - [代码重构指南](./docs/system-design/basis/refactoring.md) - [单元测试指南](./docs/system-design/basis/unit-test.md) ### 常用框架 #### Spring/SpringBoot (必看 :+1:) **知识点/面试题总结** : - [Spring 常见知识点&面试题总结](./docs/system-design/framework/spring/spring-knowledge-and-questions-summary.md) - [SpringBoot 常见知识点&面试题总结](./docs/system-design/framework/spring/springboot-knowledge-and-questions-summary.md) - [Spring/Spring Boot 常用注解总结](./docs/system-design/framework/spring/spring-common-annotations.md) - [SpringBoot 入门指南](https://github.com/Snailclimb/springboot-guide) **重要知识点详解**： - [IoC & AOP详解（快速搞懂）](./docs/system-design/framework/spring/ioc-and-aop.md) - [Spring 事务详解](./docs/system-design/framework/spring/spring-transaction.md) - [Spring 中的设计模式详解](./docs/system-design/framework/spring/spring-design-patterns-summary.md) - [SpringBoot 自动装配原理详解](./docs/system-design/framework/spring/spring-boot-auto-assembly-principles.md) #### MyBatis [MyBatis 常见面试题总结](./docs/system-design/framework/mybatis/mybatis-interview.md) ### 安全 #### 认证授权 - [认证授权基础概念详解](./docs/system-design/security/basis-of-authority-certification.md) - [JWT 基础概念详解](./docs/system-design/security/jwt-intro.md) - [JWT 优缺点分析以及常见问题解决方案](./docs/system-design/security/advantages-and-disadvantages-of-jwt.md) - [SSO 单点登录详解](./docs/system-design/security/sso-intro.md) - [权限系统设计详解](./docs/system-design/security/design-of-authority-system.md) #### 数据安全 - [常见加密算法总结](./docs/system-design/security/encryption-algorithms.md) - [敏感词过滤方案总结](./docs/system-design/security/sentive-words-filter.md) - [数据脱敏方案总结](./docs/system-design/security/data-desensitization.md) - [为什么前后端都要做数据校验](./docs/system-design/security/data-validation.md) - [为什么忘记密码时只能重置，不能告诉你原密码？](./docs/system-design/security/why-password-reset-instead-of-retrieval.md) ### 定时任务 [Java 定时任务详解](./docs/system-design/schedule-task.md) ### Web 实时消息推送 [Web 实时消息推送详解](./docs/system-design/web-real-time-message-push.md) ## 分布式 - [⭐分布式高频面试题](https://interview.javaguide.cn/distributed-system/distributed-system.html) ### 理论&算法&协议 - [CAP 理论和 BASE 理论解读](https://javaguide.cn/distributed-system/protocol/cap-and-base-theorem.html) - [Paxos 算法解读](https://javaguide.cn/distributed-system/protocol/paxos-algorithm.html) - [Raft 算法解读](https://javaguide.cn/distributed-system/protocol/raft-algorithm.html) - [ZAB 协议解读](https://javaguide.cn/distributed-system/protocol/zab.html) - [Gossip 协议详解](https://javaguide.cn/distributed-system/protocol/gossip-protocol.html) - [一致性哈希算法详解](https://javaguide.cn/distributed-system/protocol/consistent-hashing.html) ### RPC - [RPC 基础知识总结](https://javaguide.cn/distributed-system/rpc/rpc-intro.html) - [Dubbo 常见知识点&面试题总结](https://javaguide.cn/distributed-system/rpc/dubbo.html) ### ZooKeeper > 这两篇文章可能有内容重合部分，推荐都看一遍。 - [ZooKeeper 相关概念总结(入门)](https://javaguide.cn/distributed-system/distributed-process-coordination/zookeeper/zookeeper-intro.html) - [ZooKeeper 相关概念总结(进阶)](https://javaguide.cn/distributed-system/distributed-process-coordination/zookeeper/zookeeper-plus.html) ### API 网关 - [API 网关基础知识总结](https://javaguide.cn/distributed-system/api-gateway.html) - [Spring Cloud Gateway 常见知识点&面试题总结](./docs/distributed-system/spring-cloud-gateway-questions.md) ### 分布式 ID - [分布式ID介绍&实现方案总结](https://javaguide.cn/distributed-system/distributed-id.html) - [分布式 ID 设计指南](https://javaguide.cn/distributed-system/distributed-id-design.html) ### 分布式锁 - [分布式锁介绍](https://javaguide.cn/distributed-system/distributed-lock.html) - [分布式锁常见实现方案总结](https://javaguide.cn/distributed-system/distributed-lock-implementations.html) ### 分布式事务 [分布式事务常见知识点&面试题总结](https://javaguide.cn/distributed-system/distributed-transaction.html) ### 分布式配置中心 [分布式配置中心常见知识点&面试题总结](./docs/distributed-system/distributed-configuration-center.md) ## 高性能 ### 数据库优化 - [数据库读写分离和分库分表](./docs/high-performance/read-and-write-separation-and-library-subtable.md) - [数据冷热分离](./docs/high-performance/data-cold-hot-separation.md) - [常见 SQL 优化手段总结](./docs/high-performance/sql-optimization.md) - [深度分页介绍及优化建议](./docs/high-performance/deep-pagination-optimization.md) ### 负载均衡 [负载均衡常见知识点&面试题总结](./docs/high-performance/load-balancing.md) ### CDN [CDN（内容分发网络）常见知识点&面试题总结](./docs/high-performance/cdn.md) ### 消息队列 - [消息队列基础知识总结](./docs/high-performance/message-queue/message-queue.md) - [Disruptor 常见知识点&面试题总结](./docs/high-performance/message-queue/disruptor-questions.md) - [RabbitMQ 常见知识点&面试题总结](./docs/high-performance/message-queue/rabbitmq-questions.md) - [RocketMQ 常见知识点&面试题总结](./docs/high-performance/message-queue/rocketmq-questions.md) - [Kafka 常见知识点&面试题总结](./docs/high-performance/message-queue/kafka-questions-01.md) ## 高可用 [高可用系统设计指南](./docs/high-availability/high-availability-system-design.md) ### 冗余设计 [冗余设计详解](./docs/high-availability/redundancy.md) ### 限流 [服务限流详解](./docs/high-availability/limit-request.md) ### 降级&熔断 [降级&熔断详解](./docs/high-availability/fallback-and-circuit-breaker.md) ### 超时&重试 [超时&重试详解](./docs/high-availability/timeout-and-retry.md) ### 集群 相同的服务部署多份，避免单点故障。 ### 灾备设计和异地多活 **灾备** = 容灾 + 备份。 - **备份**：将系统所产生的所有重要数据多备份几份。 - **容灾**：在异地建立两个完全相同的系统。当某个地方的系统突然挂掉，整个应用系统可以切换到另一个，这样系统就可以正常提供服务了。 **异地多活** 描述的是将服务部署在异地并且服务同时对外提供服务。和传统的灾备设计的最主要区别在于“多活”，即所有站点都是同时在对外提供服务的。异地多活是为了应对突发状况比如火灾、地震等自然或者人为灾害。 ## Star 趋势  ## 公众号 如果大家想要实时关注我更新的文章以及分享的干货的话，可以关注我的公众号。 <img src="https://oss.javaguide.cn/github/javaguide/gongzhonghao-javaguide.png" alt="JavaGuide 公众号" style="zoom: 43%; display: block; margin: 0 auto;" /> <!-- #endregion home -->
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