10.15号Update    正式结束秋招了    贴了个Offer求比较：https://www.nowcoder.com/discuss/539985   希望大家顺便帮忙看看，老纠结怪了[哭笑]     也祝愿大家都能收获理想的offer[加油]        9.9号Update    最近阿里也陆陆续续开奖了 希望收获意向书！    快手2面答的不好，希望来个三面吧！    [大厂offer] [offer+1] [万事顺利]       ————————————    8.20号Update    [面试多多] [大厂offer] [offer+1]    希望能收获理想的offer       ——————————    到现在为止看了许多牛客的面经，也来回馈一下    语言是C++ 后台方向    希望秋招能有个好结果吧                                       TPLINK一面        1.自我介绍        2.项目相关       3.介绍工厂方法模式        4. C++是如何实现多态的       5.项目工作量        6.说一下Reactor模式是什么       7. select poll epoll的区别        8.详细说一下有限状态机解析HTTP请求的过程       9.异步日志双缓冲区       10.进程有哪些状态       11.哪些情况进程会由运行转为阻塞       12. TCP UDP区别        13.归并排序思路        14. 爱好        15. 提问                        TPLINK 二面        1.       自我介绍        2.       保研还是考研        3. JAVA有了解吗        4.       项目相关       5. C++11特性用了哪些，底层实现       6.       具体修复了什么BUG、举一个例子、修复BUG的过程       7.       爱好        8.       目前拿了哪些Offer                阿里云一面        1.       上来面试官先自我介绍，所在部门的城市，主要做哪方面的技术        2.       自我介绍        3.       中断响应的处理过程和机制       4. Linux内核的内存分配机制（伙伴算法和Slab分配器）        5.       详细说一下伙伴算法的实现        6. TCP和UDP的区别        7.       详细说一下拥塞控制        8. TCP粘包问题        9.       了解Redis的程度        10. Redis的持久化机制（RDB和AOF+AOFRewrite）        11.   AOF持久化写入到缓冲区，再写入到磁盘，可能会丢失数据吗？       12.   讲一下Reactor模式（Reactor+Proactor）        13. Epoll的原理和实现        14. Epoll是异步的吗？       15.   如何判断事件发生了？       16.   惊群问题       17.   异步日志系统是如何实现的               题目        1.       删除链表的倒数第K个节点        2. tcp socket echo        3. MyStack实现getMin和getMax                        阿里云二面                          自我介绍                             get post put区别                             http长连接                             惊群相关                             cookie session token                             同步IO 异步IO                             epoll lt et                             http1.0 和 http1.1                             http状态码                             redis高可用                             redis 选举                             事务ACID                             MVCC                             mysql如何实现高可用                             反问                        阿里云三面                          自我介绍                             讲了40多分钟源码                             反问                        阿里云交叉面                          自我介绍                             全程聊项目                             反问                                 招银网络科技一面        1.       自我介绍        2.       智能指针        3.       多线程循环有序打印ABC        4. new了派生类数组，内存发生什么变化        5.       delete[]的原理        6.       索引说一下（适合索引和不适合索引）        7.       索引失效（最左前缀）        8. https加密方式        9.       sql分页查找        10.   sql通配符匹配        11.   项目相关       12.   多线程的锁了解哪些        13.   可变参数        14. JAVA        15.   反问                招银网络科技二面        1.       自我介绍        2.       问项目        3.       挑一个对于你提升最大的项目细说       4. IPC及各自特点        5.       硬链接软链接        6.       数据库隔离级别       7. SQL慢可能存在什么问题？        8.   存储过程的优缺点        9.   了解过安全编码吗        10.   反问        手撕翻转字符串                       招银网络科技加面                          自我介绍                             项目中遇到的技术难点                             如何设计一个计算器                             MySQL索引                             MySQL主从复制                             Redis应用场景                             如何生成唯一ID                             二维码登录                             读过哪些源码                             反问                                                  字节跳动抖音一面        1.       自我介绍        2. Select/epoll区别        3.       进程和线程的区别        4.       进程间通信的方式        5. CPU的最小调度单位        6.       虚拟内存的作用        7.       缺页中断何时发生，具体的流程        8.       如何判断逻辑地址是否已经映射在物理地址上了        9.       页表在哪里        10.   Fork()的底层实现        11. Fork()的返回值        12. a=fork() b=fork() print(a,b)会print几个数据 各个print的结果        13. epoll的LT和ET        14.   快排和归并的时间复杂度分析 为什么是NlogN        15. Redis的基础数据结构        16. Zset底层实现        17. Hash冲突如何解决        18. Redis持久化 aof rdb        19. AOF重写        20.   一致性Hash        21. Redis集群哈希槽        22. Redis集群高可用        23.   Redis KEY过期策略        24.   反问        算法题： 链表排序 时间复杂度O(nlogn) 空间复杂度O(1)                        字节跳动抖音二面        1.       自我介绍        2.       项目相关（具体算法如何实现的）        3. OSI七层网络模型        4.       应用层常见协议        5. HTTP状态码        6. HTTP常用的方法        7.       请求头常见的字段        8.       长连接如何续期        9.       了解过restful api吗        10.   正向代理，反向代理        11. Arp攻击        12. NAT        13. TCP如何保证稳定传输的        14. TCP如何确保报文的准确性        15.   了解CRC循环校验的算法吗        16. TCP拥塞控制        17. UDP如何实现可靠传输？知道具体的应用场景吗        18.   反问        算法：洗牌        蓄水池算法（说思路）        二叉树找给定两点之间的最短距离                        字节跳动抖音三面        1.       自我介绍        2. C++17和20了解吗        3.       项目的主要工作和技术难点        4. Kill -9 发生了什么        5. Mysql的整体架构        6.       用过哪些Linux命令        7. SQL语句 如何建立索引        8.       打家劫舍2 空间O(1)        9. LFU Cache get&set 时间O(1)        大华一面        1.       自我介绍        2.       项目       3.       线程间同步方式用了哪些？ 具体的使用场景？        4.       自锁和互锁       5.       有遇到过死锁情况吗？说一下产生死锁的条件和如何打破条件        6. Reactor模式、Proactor模式        7.       析构函数可以为虚函数吗        8.       重载和重写的区别        9.       算法说思路：两个字符串，如何判断S2是否是S1的子串        10.   反问                大华二面       1.自我介绍        2.项目       3.如果有一类event优先级较高 如何改善工作队列       4.代码量如何        5.让你实现一个智能指针需要注意哪些细节        6.什么情况下引用计数+1        7.重载和重写、隐藏的区别        8.Redis 渐进式Rehash        9.渐进式Rehash查找细节        10.socket编程具体过程        11.TCP缓冲区有哪些        12.IO流是否了解        13.是否了解脚本语言                               深信服一二面        自我介绍        手撕BST删除指定val值的节点        项目       Epoll为什么高效       HTTP协议了解多少       HTTPS加密        为什么要采用非对称和对称加密混合的方式        了解python吗        手撕字符串匹配       反问            深信服三面                     自我介绍                        项目相关                        智能指针                        项目技术难点                        智力题 老鼠喝毒药                        ARP欺骗                        反问                       亿联一面                     自我介绍                        C++11相关                        顺序容器，关联性容器有哪些                        deque底层原理                        vector和deque插入删除效率                        进程间通信                        进程间同步                        互斥锁和自旋锁的区别                        惊群问题                        事件分发                        TCP粘包问题如何解决                        epoll LT和ET区别                        觉得自己的学习能力如何                   亿联二面                     自我介绍                        日志系统介绍                        Redis的完全重同步和部分重同步                        Redis数据结构                        Redis Rehash                        Linux /proc                        有没有实习                        有参与开源项目吗                        工作地点要求                        反问                                      百度一面                          自我介绍                             项目相关                             手撕单例模式                             双检查锁的问题                             Redis集群                             反问                        百度二面                          自我介绍                             项目相关                             手撕topk                                                  百度三面                                    自我介绍                                       Nginx负载均衡策略                                       研究生阶段压力最大的时候                                       平时的学习方法                                       反问                                        小米一面                          C和C++区别                             结构体和类区别                             static的各种用法                             友元函数                             malloc                             slab和伙伴算法                             进程调度                             反问                                   B站一面                          自我介绍                             TCP和UDP                             HTTP1.1 2.0                             Redis 数据结构                             mysql索引数据结构                             csrf攻击                             排序了解哪些                             反问                        B站二面                          自我介绍                             智能指针                             右值引用                             move                             volatile                             lambda表达式值捕获和引用捕获                             析构函数可以为虚函数吗                             struct和class的区别                             C++多态                             构造函数中调用虚函数有问题吗                             设计模式思想                             epoll LT ET区别                             阻塞IO 非阻塞IO 同步IO 异步IO                             线程的状态 为什么会阻塞                             索引底层数据结构                             复合索引 索引失效                        B站三面                          自我介绍                             Mysql limit过大如何优化                             偏HR面的问题                        虎牙一面                          自我介绍                             Reactor Proactor                             select epoll                             map unordered_map                             红黑树 AVL树                             内存对齐                             修改内存对齐规则                             智能指针                             Redis数据结构                             Redis主从复制同步                             HTTP2.0                             mysql索引                             mysql 隔离级别                             设计模式原则                             上大学后遇到的最大的挫折 如何解决的                             反问                        虎牙二面                          自我介绍                             select 和 poll的区别                             HTTP首部有哪些字段                             HTTP状态码                             Redis数据类型、数据结构                             Rehash过程                             MySQL事务隔离级别以及对应问题                             索引失效情况                             让你建一个数据库，考虑哪些方面                             new 和 malloc                             右值引用                             反问                        虎牙三面                          自我介绍                             设计模式                             进程、线程、协程                             反问                        Shopee新加坡一面                          自我介绍                             连续子数组的最大和                             计算器                             场景题，候选搜索栏用什么数据结构                             如何获取数据                             epoll                             http报文解析                             CPU和线程数如何选择                             反问                        Shopee新加坡二面                          自我介绍                             static                             C++多态实现                             右值引用，移动语义                             vector频繁push_back如何优化                             epoll LT ET                             epoll底层是什么数据结构                             手撕二叉树最近公共祖先，时间复杂度，空间复杂度                             手撕验证IP地址，时间复杂度，空间复杂度                             指针和引用区别                             TCP粘包相关                             TCP可靠如何保证                             网络不稳定的情况，TCP如何优化                             反问                        Shopee新加坡三面                          自我介绍                             场景题——排行榜                             反问                        快手一面                          自我介绍                             工厂方法复杂度                             手撕工厂方法模式                             运行时多态底层                             编译器如何知道是运行时多态？底层实现                             虚函数指针放在哪                             空指针指向对象，能否通过该指针调用成员函数                             TCP和UDP区别                             UDP丢包如何解决                             QUIC                             malloc底层                             栈是如何分配的(mmap）                             手撕验证BST                             100G IPV4地址统计频率                             反问                        快手二面                          自我介绍                             线程间同步                             CAS                             二叉树DFS遍历的时间复杂度和空间复杂度（O(N)和O(H））                             手撕带有Parent指针的二叉树的前中后序遍历                             反问                        欢聚一面                          自我介绍                             可靠UDP                             BBR                             Nginx惊群问题                             场景题：A->B如何探测网络质量                             反问                                    网易一面                          自我介绍                             构造函数可以是虚函数吗                             构造函数不能抛出异常                             智能指针是否线程安全                             lambda表达式                             二叉树前序遍历                             递归有什么问题                             找到第一个出现的字符                             topk                             手撕 stoi                             软链接 硬链接                             write                             反问                        网易二面                          自我介绍                             阻塞IO 非阻塞IO                             并发模型                             堆和栈的效率以及区别                             ptmalloc                             智能指针                             LRU                             内存泄漏                             线程间同步方式                             读写锁                             反问                        美团一面                          自我介绍                             面向对象的理解                             TCP UDP                             OSI七层模型                             HTTP1.0 HTTP1.1                             服务器并发模型                             Redis数据类型                             Redis哨兵                             MySQL事务                             索引数据结构                             B+树                             隔离级别                             锁的类型                             手撕回文链表                             手撕二叉树最大深度                             反问                        美团二面                          自我介绍                             Redis 跳表                             Redis 哨兵、集群                             一致性哈希                             聚集索引                             覆盖索引                             事务                             隔离级别                             间隙锁                             手撕对称二叉树（递归+迭代两种）                             手撕翻转链表2                             反问