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Title: GitHub - gacl/advanced-java: 😮 Core Interview Questions & Answers For Experienced Java(Backend) Developers | 互联网 Java 工程师进阶知识完全扫盲：涵盖高并发、分布式、高可用、微服务、海量数据处理等领域知识

Open Graph Title: GitHub - gacl/advanced-java: 😮 Core Interview Questions & Answers For Experienced Java(Backend) Developers | 互联网 Java 工程师进阶知识完全扫盲：涵盖高并发、分布式、高可用、微服务、海量数据处理等领域知识

X Title: GitHub - gacl/advanced-java: 😮 Core Interview Questions & Answers For Experienced Java(Backend) Developers | 互联网 Java 工程师进阶知识完全扫盲：涵盖高并发、分布式、高可用、微服务、海量数据处理等领域知识

Description: 😮 Core Interview Questions & Answers For Experienced Java(Backend) Developers | 互联网 Java 工程师进阶知识完全扫盲：涵盖高并发、分布式、高可用、微服务、海量数据处理等领域知识 - gacl/advanced-java

Open Graph Description: 😮 Core Interview Questions & Answers For Experienced Java(Backend) Developers | 互联网 Java 工程师进阶知识完全扫盲：涵盖高并发、分布式、高可用、微服务、海量数据处理等领域知识 - gacl/advanced-java

X Description: 😮 Core Interview Questions & Answers For Experienced Java(Backend) Developers | 互联网 Java 工程师进阶知识完全扫盲：涵盖高并发、分布式、高可用、微服务、海量数据处理等领域知识 - gacl/advanced-java

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https://patch-diff.githubusercontent.com/gacl/advanced-java#高并发架构
消息队列https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/mq-interview.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#消息队列
为什么使用消息队列？消息队列有什么优点和缺点？Kafka、ActiveMQ、RabbitMQ、RocketMQ 都有什么优点和缺点？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/why-mq.md
如何保证消息队列的高可用？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/how-to-ensure-high-availability-of-message-queues.md
如何保证消息不被重复消费？（如何保证消息消费的幂等性）https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/how-to-ensure-that-messages-are-not-repeatedly-consumed.md
如何保证消息的可靠性传输？（如何处理消息丢失的问题）https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/how-to-ensure-the-reliable-transmission-of-messages.md
如何保证消息的顺序性？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/how-to-ensure-the-order-of-messages.md
如何解决消息队列的延时以及过期失效问题？消息队列满了以后该怎么处理？有几百万消息持续积压几小时，说说怎么解决？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/mq-time-delay-and-expired-failure.md
如果让你写一个消息队列，该如何进行架构设计啊？说一下你的思路。https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/mq-design.md
搜索引擎https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/es-introduction.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#搜索引擎
ES 的分布式架构原理能说一下么（ES 是如何实现分布式的啊）？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/es-architecture.md
ES 写入数据的工作原理是什么啊？ES 查询数据的工作原理是什么啊？底层的 Lucene 介绍一下呗？倒排索引了解吗？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/es-write-query-search.md
ES 在数据量很大的情况下（数十亿级别）如何提高查询效率啊？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/es-optimizing-query-performance.md
ES 生产集群的部署架构是什么？每个索引的数据量大概有多少？每个索引大概有多少个分片？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/es-production-cluster.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#缓存
在项目中缓存是如何使用的？缓存如果使用不当会造成什么后果？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/why-cache.md
Redis 和 Memcached 有什么区别？Redis 的线程模型是什么？为什么单线程的 Redis 比多线程的 Memcached 效率要高得多？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/redis-single-thread-model.md
Redis 都有哪些数据类型？分别在哪些场景下使用比较合适？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/redis-data-types.md
Redis 的过期策略都有哪些？手写一下 LRU 代码实现？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/redis-expiration-policies-and-lru.md
如何保证 Redis 高并发、高可用？Redis 的主从复制原理能介绍一下么？Redis 的哨兵原理能介绍一下么？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/how-to-ensure-high-concurrency-and-high-availability-of-redis.md
Redis 主从架构是怎样的？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/redis-master-slave.md
Redis 的持久化有哪几种方式？不同的持久化机制都有什么优缺点？持久化机制具体底层是如何实现的？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/redis-persistence.md
Redis 集群模式的工作原理能说一下么？在集群模式下，Redis 的 key 是如何寻址的？分布式寻址都有哪些算法？了解一致性 hash 算法吗？如何动态增加和删除一个节点？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/redis-cluster.md
了解什么是 Redis 的雪崩、穿透和击穿？Redis 崩溃之后会怎么样？系统该如何应对这种情况？如何处理 Redis 的穿透？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/redis-caching-avalanche-and-caching-penetration.md
如何保证缓存与数据库的双写一致性？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/redis-consistence.md
Redis 的并发竞争问题是什么？如何解决这个问题？了解 Redis 事务的 CAS 方案吗？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/redis-cas.md
生产环境中的 Redis 是怎么部署的？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/redis-production-environment.md
有了解过 Redis rehash 的过程吗？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/redis-rehash.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#分库分表
为什么要分库分表（设计高并发系统的时候，数据库层面该如何设计）？用过哪些分库分表中间件？不同的分库分表中间件都有什么优点和缺点？你们具体是如何对数据库如何进行垂直拆分或水平拆分的？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/database-shard.md
现在有一个未分库分表的系统，未来要分库分表，如何设计才可以让系统从未分库分表动态切换到分库分表上？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/database-shard-method.md
如何设计可以动态扩容缩容的分库分表方案？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/database-shard-dynamic-expand.md
分库分表之后，id 主键如何处理？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/database-shard-global-id-generate.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#读写分离
如何实现 MySQL 的读写分离？MySQL 主从复制原理是啥？如何解决 MySQL 主从同步的延时问题？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/mysql-read-write-separation.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#高并发系统
如何设计一个高并发系统？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/high-concurrency-design.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#分布式系统
面试连环炮https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/distributed-system-interview.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#面试连环炮
https://patch-diff.githubusercontent.com/gacl/advanced-java#系统拆分
为什么要进行系统拆分？如何进行系统拆分？拆分后不用 Dubbo 可以吗？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/why-dubbo.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#分布式服务框架
说一下 Dubbo 的工作原理？注册中心挂了可以继续通信吗？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/dubbo-operating-principle.md
Dubbo 支持哪些序列化协议？说一下 Hessian 的数据结构？PB 知道吗？为什么 PB 的效率是最高的？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/dubbo-serialization-protocol.md
Dubbo 负载均衡策略和集群容错策略都有哪些？动态代理策略呢？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/dubbo-load-balancing.md
Dubbo 的 spi 思想是什么？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/dubbo-spi.md
如何基于 Dubbo 进行服务治理、服务降级、失败重试以及超时重试？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/dubbo-service-management.md
分布式服务接口的幂等性如何设计（比如不能重复扣款）？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/distributed-system-idempotency.md
分布式服务接口请求的顺序性如何保证？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/distributed-system-request-sequence.md
如何自己设计一个类似 Dubbo 的 RPC 框架？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/dubbo-rpc-design.md
CAP 定理的 P 是什么？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/distributed-system-cap.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#分布式锁
Zookeeper 都有哪些应用场景？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/zookeeper-application-scenarios.md
使用 Redis 如何设计分布式锁？使用 Zookeeper 来设计分布式锁可以吗？以上两种分布式锁的实现方式哪种效率比较高？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/distributed-lock-redis-vs-zookeeper.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#分布式事务
分布式事务了解吗？你们如何解决分布式事务问题的？TCC 如果出现网络连不通怎么办？XA 的一致性如何保证？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/distributed-transaction.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#分布式会话
集群部署时的分布式 Session 如何实现？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/distributed-system/distributed-session.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#高可用架构
Hystrix 介绍https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-availability/hystrix-introduction.md
电商网站详情页系统架构https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-availability/e-commerce-website-detail-page-architecture.md
Hystrix 线程池技术实现资源隔离https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-availability/hystrix-thread-pool-isolation.md
Hystrix 信号量机制实现资源隔离https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-availability/hystrix-semphore-isolation.md
Hystrix 隔离策略细粒度控制https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-availability/hystrix-execution-isolation.md
深入 Hystrix 执行时内部原理https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-availability/hystrix-process.md
基于 request cache 请求缓存技术优化批量商品数据查询接口https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-availability/hystrix-request-cache.md
基于本地缓存的 fallback 降级机制https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-availability/hystrix-fallback.md
深入 Hystrix 断路器执行原理https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-availability/hystrix-circuit-breaker.md
深入 Hystrix 线程池隔离与接口限流https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-availability/hystrix-thread-pool-current-limiting.md
基于 timeout 机制为服务接口调用超时提供安全保护https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-availability/hystrix-timeout.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#高可用系统
https://patch-diff.githubusercontent.com/gacl/advanced-java#限流
如何限流？在工作中是怎么做的？说一下具体的实现？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-concurrency/huifer-how-to-limit-current.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#熔断
熔断框架如何做技术选型？选用 Sentinel 还是 Hystrix？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/high-availability/sentinel-vs-hystrix.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#降级
https://patch-diff.githubusercontent.com/gacl/advanced-java#微服务架构
微服务架构整个章节内容属额外新增，后续抽空更新，也欢迎读者们参与补充完善https://github.com/doocs/advanced-java
关于微服务架构的描述https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/micro-services/microservices-introduction.md
从单体式架构迁移到微服务架构https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/micro-services/migrating-from-a-monolithic-architecture-to-a-microservices-architecture.md
微服务的事件驱动数据管理https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/micro-services/event-driven-data-management-for-microservices.md
选择微服务部署策略https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/micro-services/choose-microservice-deployment-strategy.md
微服务架构的优势与不足https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/micro-services/advantages-and-disadvantages-of-microservice.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#spring-cloud-微服务架构
什么是微服务？微服务之间是如何独立通讯的？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/micro-services/huifer-what's-microservice-how-to-communicate.md
你所知道的微服务技术栈都有哪些？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/micro-services/huifer-micro-services-technology-stack.md
微服务治理策略https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/micro-services/huifer-micro-service-governance.md
谈谈服务发现组件 Eureka 的主要调用过程？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/micro-services/how-eureka-enable-service-discovery-and-service-registration.md
https://patch-diff.githubusercontent.com/gacl/advanced-java#海量数据处理
如何从大量的 URL 中找出相同的 URL？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/big-data/find-common-urls.md
如何从大量数据中找出高频词？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/big-data/find-top-100-words.md
如何找出某一天访问百度网站最多的 IP？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/big-data/find-top-1-ip.md
如何在大量的数据中找出不重复的整数？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/big-data/find-no-repeat-number.md
如何在大量的数据中判断一个数是否存在？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/big-data/find-a-number-if-exists.md
如何查询最热门的查询串？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/big-data/find-hotest-query-string.md
如何统计不同电话号码的个数？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/big-data/count-different-phone-numbers.md
如何从 5 亿个数中找出中位数？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/big-data/find-mid-value-in-500-millions.md
如何按照 query 的频度排序？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/big-data/sort-the-query-strings-by-counts.md
如何找出排名前 500 的数？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/big-data/find-rank-top-500-numbers.md
讲讲大数据中 TopK 问题的常用套路？https://patch-diff.githubusercontent.com/gacl/advanced-java/blob/main/docs/big-data/topk-problems-and-solutions.md
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https://patch-diff.githubusercontent.com/gacl/advanced-java#贡献者
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