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https://patch-diff.githubusercontent.com/redisolr/algorithm-study#java基础
String，Stringbuffer，StringBuilder的区http://www.cnblogs.com/su-feng/p/6659064.html
ArrayList和LinkedList有什么区别。https://blog.csdn.net/seulzz/article/details/77905779
什么是HashMap?https://mp.weixin.qq.com/s/SZqJBLRVIT-Y4SqGoVzP9g
用过哪些Map类，都有什么区别https://blog.csdn.net/qq_30683329/article/details/80455779
JAVA8的ConcurrentHashMap为什么放弃了分段锁，有什么问题吗，如果你来设计，你如何设计。http://www.importnew.com/28263.html
HashMap, ConcurrentHashMap 原理https://mp.weixin.qq.com/s/QggmWkrgYrNtVkdSKYuRfg
有没有有顺序的Map实现类，如果有，他们是怎么保证有序的。https://www.jianshu.com/p/07cceede7b03
抽象类和接口的区别，类可以继承多个类么，接口可以继承多个接口么,类可以实现多个接口么。https://www.cnblogs.com/dolphin0520/p/3811437.html
IO模型有哪些，讲讲你理解的nio ，他和bio，aio的区别是啥，谈谈reactor模型。https://www.cnblogs.com/javalyy/p/8882066.html
反射的原理，反射创建类实例的三种方式是什么。http://blog.51cto.com/4247649/2109128
反射中，Class.forName和ClassLoader区别 。https://blog.csdn.net/qq_27093465/article/details/52262340
java动态代理实现与原理详细分析https://www.cnblogs.com/gonjan-blog/p/6685611.html
描述动态代理的几种实现方式，分别说出相应的优缺点。https://blog.csdn.net/wufaliang003/article/details/79305688/
动态代理与cglib实现的区别。https://www.cnblogs.com/ygj0930/p/6542259.html
final的用途。https://www.cnblogs.com/dolphin0520/p/3736238.html
写出三种单例模式实现https://mp.weixin.qq.com/s/lZDqy5WatnORY9fEqjjztw
深拷贝和浅拷贝区别https://blog.csdn.net/wangxueming/article/details/52034841
数组和链表数据结构描述，各自的时间复杂度。https://blog.csdn.net/u013632854/article/details/70338252
error和exception的区别，CheckedException，RuntimeException的区别。https://blog.csdn.net/iblade/article/details/78196016
在自己的代码中，如果创建一个java.lang.String类，这个类是否可以被类加载器加载？为什么。https://blog.csdn.net/qq_26807245/article/details/80912026
说一说你对java.lang.Object对象中hashCode和equals方法的理解。在什么场景下需要重新实现这两个方法。https://blog.csdn.net/qq_21163061/article/details/73606523
在jdk1.5中，引入了泛型，泛型的存在是用来解决什么问题。https://www.cnblogs.com/panjun-Donet/articles/1131446.html
有没有可能2个不相等的对象有相同的hashcode。https://blog.csdn.net/dalang_1234/article/details/79200889
java8的新特性。http://www.runoob.com/java/java8-new-features.html
强引用、软引用、弱引用、幻象引用有什么区别？https://github.com/randian666/algorithm-study/blob/master/MD/Reference.md
java运算符 与（&）、非（~）、或（|）、异或（^）https://www.cnblogs.com/yesiamhere/p/6675067.html
集合框架面试题https://github.com/Snailclimb/JavaGuide/blob/master/Java%E7%9B%B8%E5%85%B3/%E8%BF%99%E5%87%A0%E9%81%93Java%E9%9B%86%E5%90%88%E6%A1%86%E6%9E%B6%E9%9D%A2%E8%AF%95%E9%A2%98%E5%87%A0%E4%B9%8E%E5%BF%85%E9%97%AE.md
史上最全Java面试题https://blog.csdn.net/linzhiqiang0316/article/details/80473906
各大公司Java面试题超详细总结http://www.cnblogs.com/java1024/p/7685400.html
https://patch-diff.githubusercontent.com/redisolr/algorithm-study#jvm知识
讲讲jvm运行时数据区https://mp.weixin.qq.com/s/li3ISdodGu2EK_Fo_4NJPA
JVM的内存结构，Eden和Survivor比例。https://blog.csdn.net/bluetjs/article/details/52874852
JVM中一次完整的GC流程是怎样的，对象如何晋升到老年代，说说你知道的几种主要的JVM参数。https://www.jianshu.com/p/314272e6d35b
讲下cms和G1，包括原理，流程，优缺点。https://blog.csdn.net/zhanggang807/article/details/45956325
垃圾回收算法的实现原理。http://www.cnblogs.com/xiaoxi/p/6486852.html
G1，包括原理，流程，优缺点。https://www.cnblogs.com/nashiyue/p/5797713.html
CMS收集器学习笔记https://mp.weixin.qq.com/s/OzE7WrvcGPEcf_UHj2a-lg
垃圾回收算法的实现原理。http://www.cnblogs.com/aspirant/p/8662690.html
当出现了内存溢出，你怎么排错。https://blog.csdn.net/wtt945482445/article/details/52483944
JVM内存模型的相关知识了解多少，比如重排序，内存屏障，happen-before，主内存，工作内存等。https://mp.weixin.qq.com/s/rkxcqZCvCnC0Psr0_oJzbQ
简单说说你了解的类加载器，可以打破双亲委派么，怎么打破。http://blog.csdn.net/javazejian/article/details/73413292
加载时机与加载过程https://blog.csdn.net/justloveyou_/article/details/72466105
Java类加载的方式http://blog.csdn.net/justloveyou_/article/details/72217806
Java对象的创建过程http://blog.csdn.net/justloveyou_/article/details/72466416
你们线上应用的JVM参数有哪些。https://www.cnblogs.com/redcreen/archive/2011/05/04/2037057.html
g1和cms区别,吞吐量优先和响应优先的垃圾收集器选择。https://blog.csdn.net/ZYC88888/article/details/80353357
怎么打出线程栈信息。http://www.cnblogs.com/kongzhongqijing/articles/3630264.html
https://patch-diff.githubusercontent.com/redisolr/algorithm-study#开源框架知识
Spring中bean的作用域与生命周期https://mp.weixin.qq.com/s?__biz=MzU4NDQ4MzU5OA==&mid=2247484400&idx=2&sn=7201eb365102fce017f89cb3527fb0bc&chksm=fd985591caefdc872a2fac897288119f94c345e4e12150774f960bf5f816b79e4b9b46be3d7f&token=1990180468&lang=zh_CN#rd
讲讲Spring加载流程。https://segmentfault.com/a/1190000012887776
spring循环依赖http://www.tianxiaobo.com/2018/06/08/Spring-IOC-%E5%AE%B9%E5%99%A8%E6%BA%90%E7%A0%81%E5%88%86%E6%9E%90-%E5%BE%AA%E7%8E%AF%E4%BE%9D%E8%B5%96%E7%9A%84%E8%A7%A3%E5%86%B3%E5%8A%9E%E6%B3%95/
Spring AOP的实现原理。https://www.jianshu.com/p/7fa3e6ebf0c1
讲讲Spring事务的传播属性。https://www.cnblogs.com/cnmenglang/p/6410848.html
Spring如何管理事务的。https://blog.csdn.net/donggua3694857/article/details/69858827
Springmvc 中DispatcherServlet初始化过程。https://www.cnblogs.com/xiaoxi/p/6164383.html
SpringMVC 原理了解吗？https://mp.weixin.qq.com/s?__biz=MzU4NDQ4MzU5OA==&mid=2247484496&idx=1&sn=5472ffa687fe4a05f8900d8ee6726de4&chksm=fd985231caefdb27fc75b44ecf76b6f43e4617e0b01b3c040f8b8fab32e51dfa5118eed1d6ad&token=1990180468&lang=zh_CN#rd
什么是TCP粘包，拆包。解决方式是什么。https://blog.csdn.net/wxy941011/article/details/80428470
Mybatis的底层实现原理。https://mp.weixin.qq.com/s/AqqSRYPdUbruSAhhmqVneA
69道Spring面试题和答案http://ifeve.com/spring-interview-questions-and-answers/
Spring 面试问题 TOP 50https://mp.weixin.qq.com/s/eQ-lpYiW7a437djqliKhmg
Spring中用了哪些设计模式https://mp.weixin.qq.com/s/iGbwKDqB6A0ktNCY8Wd-XQ
https://patch-diff.githubusercontent.com/redisolr/algorithm-study#操作系统
Linux下IO模型有几种，各自的含义是什么。https://juejin.im/post/5b94e93b5188255c672e901e
epoll和poll有什么区别。https://www.cnblogs.com/Anker/p/3265058.html
平时用到哪些Linux命令。以及如何排查线上问题https://github.com/randian666/algorithm-study/blob/master/MD/Linux.md
BATJ面试必会之Linux命令篇https://mp.weixin.qq.com/s/6ZPNeX9d3avscI642x2kHA
https://patch-diff.githubusercontent.com/redisolr/algorithm-study#多线程与并发
volatile的原理，作用，能代替锁么。https://blog.csdn.net/javazejian/article/details/72772461
画一个线程的生命周期状态图。https://blog.csdn.net/houbin0912/article/details/77969563
Java 各种锁的小结https://mp.weixin.qq.com/s/_xazrXa8MBYaz2WaX6BNew
Lock与Synchronized的区别 。https://blog.csdn.net/javazejian/article/details/75043422
synchronized的原理是什么https://blog.csdn.net/javazejian/article/details/72828483
量级锁，可重入锁，公平锁，非公平锁，乐观锁，悲观锁。https://www.toutiao.com/i6630764198357893646/
ReentranLock源码，设计原理，整体过程https://www.cnblogs.com/chengxiao/p/7255941.html
用过线程池吗，如果用过，请说明原理，并说说newCache和newFixed有什么区别，构造函数的各个参数的含义是什么，比如coreSize，maxsize等。https://blog.csdn.net/wy11933/article/details/80399562
spring的controller是单例还是多例，怎么保证并发的安全。https://www.cnblogs.com/zxf330301/articles/6105127.html
ThreadLocal用过么，用途是什么，原理是什么，用的时候要注意什么。https://mp.weixin.qq.com/s?__biz=MzUxNDA1NDI3OA==&mid=2247484994&idx=1&sn=18ff91ffc530f5bf9a016b3e06c17168&chksm=f94a87abce3d0ebd0d23d0cf190777974ef6ba353653071a63ba7b06c417deca59c4279a2171&token=375547551&lang=zh_CN&scene=21#wechat_redirect
CAS机制是什么，如何解决ABA问题。https://blog.csdn.net/javazejian/article/details/72772470
深入分析AQS实现原理https://mp.weixin.qq.com/s/2v0T3Nu7m2ka9D8PLl2XxQ
synchronized原理http://blog.csdn.net/javazejian/article/details/72828483
阻塞队列LinkedBlockingQueue与ArrayBlockingQueuehttp://blog.csdn.net/javazejian/article/details/77410889
导致线程死锁的原因？怎么解除线程死锁。https://github.com/randian666/algorithm-study/blob/master/src/main/java/com/algorithm/study/demo/thread/DeadlockTest.java
延迟队列的实现方式，delayQueue和时间轮算法的异同。https://blog.csdn.net/u014634338/article/details/78385603
史上最全 Java 多线程面试题及答案https://mp.weixin.qq.com/s?__biz=MzI3ODcxMzQzMw==&mid=2247486721&idx=2&sn=c2058d5ddd7453eb9c39732c114879d5&scene=21#wechat_redirect
Java并发编程73道面试题及答案https://mp.weixin.qq.com/s/N1YAZmBLX-bC-XkuC7yl_Q
https://patch-diff.githubusercontent.com/redisolr/algorithm-study#tcp与http
TCP三次握手和四次挥手的流程，为什么断开连接要4次,如果握手只有两次，会出现什么。https://blog.csdn.net/qzcsu/article/details/72861891
说说你知道的几种HTTP响应码，比如200, 302, 404。https://blog.csdn.net/ddhsea/article/details/79405996
当你用浏览器打开一个链接的时候，计算机做了哪些工作步骤。https://segmentfault.com/a/1190000006879700
TCP/IP如何保证可靠性，说说TCP头的结构。https://blog.csdn.net/liuchenxia8/article/details/80428157
如何理解HTTP协议的无状态性。https://blog.csdn.net/tennysonsky/article/details/44562435
HTTP的长连接是什么意思。http://www.cnblogs.com/gotodsp/p/6366163.html
http请求过程https://www.jianshu.com/p/c1d6a294d3c0
Https实现原理https://www.cnblogs.com/zery/p/5164795.html
计算机网络面试问题集锦https://blog.csdn.net/justloveyou_/article/details/78303617
https://patch-diff.githubusercontent.com/redisolr/algorithm-study#架构设计与分布式
ZooKeeper基本原理https://zhuanlan.zhihu.com/p/30024403
分布式锁解决并发的三种实现方式https://www.jianshu.com/p/8bddd381de06
分布式集群下如何做到唯一序列号。https://blog.csdn.net/hl_java/article/details/78462283
如何使用redis和zookeeper实现分布式锁？有什么区别优缺点，会有什么问题，分别适用什么场景。https://mp.weixin.qq.com/s/OCIg3TwpmXzqOVqBZ2fSow
基于Zookeeper的分布式锁https://blog.csdn.net/qiangcuo6087/article/details/79067136
如果知道redlock，讲讲他的算法实现http://www.redis.cn/topics/distlock.html
分布式事务的原理，优缺点，如何使用分布式事务，2pc 3pc 的区别，解决了哪些问题，还有哪些问题没解决，如何解决，你自己项目里涉及到分布式事务是怎么处理的。https://www.jianshu.com/p/16b1baf015e8
什么是一致性hash。https://www.cnblogs.com/lpfuture/p/5796398.html
什么是paxos算法， 什么是zab协议。https://blog.csdn.net/zhengzhihust/article/details/53456371
说说你平时用到的设计模式https://github.com/Snailclimb/JavaGuide/blob/master/Java%E7%9B%B8%E5%85%B3/%E8%AE%BE%E8%AE%A1%E6%A8%A1%E5%BC%8F.md
Dubbo的原理，有看过源码么，数据怎么流转的，怎么实现集群，负载均衡，服务注册和发现，重试转发，快速失败的策略是怎样的 。https://blog.csdn.net/he90227/article/details/70157046/
自己实现过rpc么，原理可以简单讲讲。Rpc要解决什么问题。https://mp.weixin.qq.com/s/kHcbIgMFNB0np6olcPch4w
Zookeeper的用途，选举的原理是什么。https://blog.csdn.net/liuj2511981/article/details/42460069
Zookeeper watch机制原理。https://blog.csdn.net/z69183787/article/details/53023578
如何做到接口的幂等性。https://www.cnblogs.com/linjiqin/p/9678022.html
如何做限流策略，令牌桶和漏斗算法的使用场景。https://blog.csdn.net/fouy_yun/article/details/81025984
https://patch-diff.githubusercontent.com/redisolr/algorithm-study#数据结构与算法
用java自己实现一个LRU。https://github.com/randian666/algorithm-study/blob/master/src/main/java/com/algorithm/study/demo/LRUCache/LRUMap.java
遍历二叉树。https://github.com/randian666/algorithm-study/blob/master/src/main/java/com/algorithm/study/demo/datastructure/tree/LinkBinTree.java
www.jd.cn）反转函数。http://www.jd.cn）反转函数。
如何判断一个数是否在40亿个整数中？https://mp.weixin.qq.com/s?__biz=MzU4NDQ4MzU5OA==&mid=2247484394&idx=1&sn=769e86bd815cf836eaa88a46836e4287&chksm=fd98558bcaefdc9d362f4d0912849924ae2d1f1277147edab7508cd3f1753ea4afd719237fa1&scene=21#wechat_redirect
剑指Offer学习【所有面试题汇总】https://blog.csdn.net/derrantcm/article/details/46887821
Leetcode 题解https://github.com/CyC2018/CS-Notes/blob/master/docs/notes/Leetcode%20%E9%A2%98%E8%A7%A3.md
算法https://github.com/CyC2018/CS-Notes/blob/master/docs/notes/%E7%AE%97%E6%B3%95.md
Leetcode-LinkListhttps://github.com/Snailclimb/JavaGuide/blob/master/%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84%E4%B8%8E%E7%AE%97%E6%B3%95/Leetcode-LinkList1.md
几道常见的子符串算法题https://github.com/Snailclimb/JavaGuide/blob/master/%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84%E4%B8%8E%E7%AE%97%E6%B3%95/%E6%90%9E%E5%AE%9ABAT%E9%9D%A2%E8%AF%95%E2%80%94%E2%80%94%E5%87%A0%E9%81%93%E5%B8%B8%E8%A7%81%E7%9A%84%E5%AD%90%E7%AC%A6%E4%B8%B2%E7%AE%97%E6%B3%95%E9%A2%98.md
数据结构https://github.com/Snailclimb/JavaGuide/blob/master/%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84%E4%B8%8E%E7%AE%97%E6%B3%95/%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84.md
https://patch-diff.githubusercontent.com/redisolr/algorithm-study#数据库
MySQL数据库的索引原理、与慢SQL优化的5大原则https://www.toutiao.com/i6611390023797309960/
数据库隔离级别有哪些，各自的含义是什么，MYSQL默认的隔离级别是是什么。http://www.cnblogs.com/huanongying/p/7021555.html
MYSQL有哪些存储引擎，各自优缺点。https://blog.csdn.net/liu857279611/article/details/51558927
数据库的ACID是什么。https://www.cnblogs.com/lichunyang321/p/9594196.html
mysql中in 和exists 区别。https://www.cnblogs.com/xiaoxiong-kankan/p/7928153.html
MySQL索引背后的数据结构及算法原理https://www.kancloud.cn/kancloud/theory-of-mysql-index/41846
数据库面试问题集锦https://blog.csdn.net/justloveyou_/article/details/78308460
https://patch-diff.githubusercontent.com/redisolr/algorithm-study#消息队列
消息队列的使用场景。https://blog.csdn.net/seven__________7/article/details/70225830
kafka吞吐量高的原因。https://my.oschina.net/runningwork/blog/918613
kafka架构和原理http://lxw1234.com/archives/2015/09/504.htm
https://patch-diff.githubusercontent.com/redisolr/algorithm-study#缓存
Redis的高并发和快速原因https://mp.weixin.qq.com/s/HuwgTvNtmHJ9tpF7V53opg
常见的缓存策略有哪些，如何做到缓存(比如redis)与DB里的数据一致性，你们项目中用到了https://mp.weixin.qq.com/s/yQjTddLWy-oSYPYxyGVeKw
一文揭秘单线程的Redis为什么这么快?https://mp.weixin.qq.com/s/4ndQI4CyqtjaYJKts8ChdA
如何防止缓存击穿和雪崩。https://mp.weixin.qq.com/s/SQQy6NKvoAgIaeAjzkRpDw
redis的持久化的机制，aof和rdb的区别。https://blog.csdn.net/jackpk/article/details/30073097
Reids的主从复制机制原理。http://www.cnblogs.com/kevingrace/p/5685332.html
Redis过期策略及实现原理https://www.cnblogs.com/linuxprobe-sarah/p/10386800.html
redis面试49题https://mp.weixin.qq.com/s/5mLTVpjn_iebsOp60HFU2Q
https://patch-diff.githubusercontent.com/redisolr/algorithm-study#搜索
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://doocs.github.io/advanced-java/#/docs/high-concurrency/es-architecture
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://doocs.github.io/advanced-java/#/docs/high-concurrency/es-write-query-search
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://doocs.github.io/advanced-java/#/docs/high-concurrency/es-optimizing-query-performance
elasticsearch是如何实现master选举的。https://zhuanlan.zhihu.com/p/34830403
详细描述一下Elasticsearch搜索的过程。https://blog.csdn.net/u010454030/article/details/79794788
lucence内部结构是什么。https://www.jianshu.com/p/0dfcee4637c5
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