Today I share with you, "Ali, a senior Java interview questions", namely, database, library sub-sub-table, distributed cache, distributed service framework, distributed message queuing, distributed search engine, complicated by high availability architecture design, JVM, Ali, a senior java face questions Spring, algorithms, data structures, etc. Read on to find together with the small series.
A Database
- Use mysq1 index What are the principles? What index data structure? B + tree and what is the difference Btree?
- mysq What storage engine ah? detail are what's the difference ?? !!
- High-level design system database concurrency how to design a database lock ??? What type? How to achieve it?
- Database transaction What?
II. Sub-library sub-table
- How to design sub-library sub-table scheme can be dynamically expansion volume reduction of?
- Which sub-library sub-table used middleware, so what advantages and disadvantages,
- Talk about your understanding of the underlying sub-library sub-table middleware implementation principle?
- I now have a non-system sub-library sub-table, the system needs after sub-library sub-table, how to design,
- Let not sub-library sub-table system to dynamically switch to the system of sub-library sub-table?
- Distributed Transaction know? How do you solve? TCC? The reason that if network, network unreasonable even how to do ah
- Why sub-library sub-table ah?
- What are addressing distributed algorithm? Consistency hash know it?
- Handwritten about java implementation code? If you take userId touch slice, then I want to check how a continuous period of time, the data do?
- How to solve the sub-library sub-table primary key problem? What implementations?
III. Distributed Cache
- What is the difference redis and memcheched? Why single-threaded redis higher than memched efficient multi-threaded ah?
- redis what type of data? Under what scenarios use ah?
- How reids from the master copy is how to achieve? Redis cluster model is to achieve it? Redis addressing the key is how ah?
- How to use redis design distributed lock? Zk can use it? How ah? Which of these two higher efficiency ah?
- Redis persistence you know? What are the disadvantages has specific advantages ah ?? underlying achieve it?
- ? Redis expiration policy LRU write what are -? Under java version of the code, right?
- Dubbo talk about the implementation process? Hung up the registry may continue to communicate it?
IV. Distributed Service Framework
- zk principle know? zk can do? Paxos algorithm know? talk about principle and ??
- dubbo支持哪些序列化协议?hessian?说一Fhessian的数据结构?PB知道吗?为啥PB效率是最高的啊??
- 知道netty吗?netty可以干嘛呀NIO,BIO,AIO都是什么啊?有什么区别啊?
- dubbo复制均衡策略和高可用策略都有哪些啊?动态代理策略呢?
五. 分布式消息队列
- 为什么要进行系统拆分啊?拆分不用dubbo可以吗?dubbo和thrift什么区别啊?
- 为什么使用消息队列啊?消息队列有什么优点和缺点啊?
- 如何保证消息队列的高可用啊?如何保证消息不被重复消费啊?
- kafka,activemq,rabbitmq,rocketmq都有什么优点,缺点啊?
- 如果让你写一个消息队列，该如何进行架构设计啊?说-下你的思路
六. 分布式搜索引擎
- es的工作过程实现是如何的?如何实现分布式的啊
- 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?
- es的查询是个怎么的工作过程?底层的lucence介绍一下呗?倒排索引知道吗?
- es和mongdb什么区别啊?都在什么场景下使用啊?
七. 高并发高可用架构设计
- 如何设计一个高并发高可用系统?
- 如何限流?工程中怎么做的，说一下具体实现?
- 缓存如何使用的?缓存使用不当会造成什么后果?
- 如何熔断啊?熔断框架都有哪些?具体实现原理知道吗?
- 如何降级?如何进行系统拆分,如何数据库拆分?
八. JVM
- 请介绍一下JVM内存模型??用过什么垃圾回收器?都说说呗?
- 线上发送频繁ful1gc如何处理??CPU使用率过高怎么办?
- 如何定位问题?如何解决?说下解决思路和处理方法.
- 知道字节码吗?字节码都有哪些?
- IntegerX5,inty=5,比较x=y都经过哪些步骤?
- 讲讲类加载机制呗?都有哪些类加载器,这些类加载器都加载哪些文件?
- 手写一下类加载Demo
- 知道osgi吗?他是如何实现的?
- 请问你做过哪些JVM优化?使用什么方法?达到什么效果?
- class.forName ( "java.langString") and String.class.getClassLoader (). LoadClass ( "java.lang.String") What is the difference ah?
Nine. Spring
- What are the mechanisms spring ah? AOP bottom of how to achieve ah? I0C it ??
- cglib know? What is the difference between him and jdk dynamic proxy? handwriting a jdk dynamic proxy chant?
- Talk about TCP / IP four?
- http workflow specific ah ??? http1.0http1.1http2.0 What is the difference?
- TCP three-way handshake, four break workflow? Draw a flow chart about? Why not four or five times a second ah?
- Painting at the workflow https? Specifically how ah? How to prevent get caught ah?
X. algorithm
- Relatively simple, I'm a file, there are 4.5 billion digits, how to re-ah? How to find the largest number ah?
XI. Data Structure
- Binary Tree and red-black trees
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