Foreword
Each programmer has a giant's dream, and the Internet giant is naturally bear the brunt of Alibaba 's most popular, today small to share into a guy's face by Alibaba!
"The manufacturers do not want to enter is not a good programmer programmers" Ha ha ha
After the Spring Festival, this is a gold and three silver four occasion, most people are ready for this finding a copy of your favorite work in two months, but since the year 2020 some special, pneumonia outbreak, our work and life have caused a great impact. So, is not the case, we do not work, do not learn of it? In fact, precisely because of the spread of the virus during infection Now is the time, so we stay home to learn is no better. For Java programmers, use two to three months time, study hard, preparing for them, until the epidemic better, the beginning of the interview, you will not be timid.
I am also ready for six months, finally got his wish to get Ali offer!
Personal situation
I am an ordinary two non-undergraduates, more than three years to develop (Java back-end), usually also more inquisitive learning, it is also extremely serious and responsible attitude towards work, to work himself into giant still very confident, my direction is Java, Java also know that the more intense competition, manufacturers more difficult to enter, but I have no fear. For this reason also half a year ago to begin preparations for the beginning of this year pushed with their own efforts to review and knowledge also got his wish success to get Ali's offer in a big brother!
Special thanks to the help and push the big brother to me in the offer!
Java middleware side
1. Technical side inspection range:
Key asked the Java thread lock: bottom synchronized and associated implementation ReentrantLock
As well as the underlying thread pool to achieve common parameters
Data structures are basically asked again: linked lists, queues, etc.
Java Memory Model: Frequently Asked JVM generational model, and the difference between the JDK1.8, finally asked the relevant JVM tuning parameters
Implementation of Distributed Lock comparison
2. Technical side:
1. Self-introduction
2. Technical aspects of what good?
3. What types of locks have Java? (& Pessimistic optimistic locking lock, reentrant lock & Synchronize, etc.)
4. The important data structures, and generally to achieve a basic understanding of such linked lists, queues, stacks
5. J.U.C下的常见类的使用。ThreadPool的深入考察; BlockingQueue的使用
6. Java内存分代模型，GC算法, JVM常见的启动参数; CMS算法的过程。
7. volatile关键字有什么用(包括底层原理)
8.线程池的调优策略
9. spring cloud的服务注册与发现是怎么设计的?
10.分布式系统的全局id如何实现
11.分布式锁的方案，redis和zookeeper哪个个好，如果是集群部署，高并发情况下哪个性能更好。
Java中间件二面
1.技术二面考察范围：
问了项目相关的技术实现细节
数据库相关：索引、索引底层实现、mysql相关的行锁、表锁等
redis相关：架构设计、数据一致性问题
容器:容器的设计原理等
2.技术二面：
1.参与的项目，选一个，技术难度在哪里?
2. Collections.sort底层排序方式
3.负载均衡的原理
4.设计模式与重构，谈谈你对重构的理解
5.谈谈Redis相关的集群有哪些成熟方案?
6.再谈谈-致hash算法(redis)?
7.数据库索引，B +树的特性和建树过程。
8. mysql相关的行锁，表锁;乐观锁，悲观锁
9.谈谈多线程和并发工具的使用
10.讲讲Redis的架构和组件
11. Redis的数据一致性问题(分布式多节点环境&单机环境)
12. docker容器
Java中间件三面
1.技术三面考察范围
主要谈到了高并发的实现方案
以及中间件：redis、rocketmq、kafka等的架构设计思路
最后问了平时怎么提升技术的
2.技术三面题目
1.高并发情况下，系统是如何支撑大量的请求的?
2.接着上面的问题，延伸到了中间件，kafka、 redis、 rocketmq、 mycat等 设计思路和适用场景等
3.最近上过.上哪些技术站点; 最近在看哪些书。
4.工作和生活中遇见最大的挑战，怎么去克服?
5.未来有怎样的打算
Java中间件四面
最后，你懂的，主要就是HR走流程了，主要问了未来的职业规划。
半年复习筹备，直达阿里巴巴
了解学习相关知识
During this time I have been looking for information on learning, but also through many channels and a friend to go to a US group of architects write Java interview Collection (284) I put the US Mission Architect Java interview gave me a book Kenwan so also found a Java back-end as well as interviews and scene of some manufacturers continue to face questions brush to improve their vision problems
Obtaining: forward and comment on this article, and then focus on small series, plus I tkzl6666 VX [] to take away all the information -
Core Java book review interview knowledge
This core Java knowledge to resolve each point of deep knowledge, everyone should be helpful, it is the most in-depth knowledge of Java gathered together parsed (highly recommend everyone take a look)
JVM
JAVA collection
JAVA multithreading
JAVA foundation
Spring Principle
Micro Services
Hetty given PC
The internet
Journal
Zookeeper
Kafks
Rabbi tMQ
Hbase
MongoDB
Cassandra
Design Patterns
Load Balancing
database
Consensus algorithm
JAVA algorithm
data structure
Encryption Algorithm
Distributed Cache
Hadoop
Spark
Storm
TOMORROW
Machine Learning
cloud computing
The manufacturers seeking to interview scene (to learn can enhance people called no skin, ah ha ha ha)
I was face to these manufacturers also find a lot of questions scene brush, to enhance their own is very large (also specifically asked for copies interview answers)
US group was part of the face
Good future interview scene
To share some of my personal study documents, a friend in need get their choice:
1, finishing the interview document subject
Since it is to the interview, then ultimately, brush the question, in fact, after the Spring Festival to go home, not going anywhere, I brush a lot of interview questions, so to be able to be aware of during the interview, basically clear the interview process will be asked what knowledge, high-frequency problem and what, so brush theme interview preparation process is a very important point.
According to their interview experience and continue to organize the collection of (Collector's Edition)
Related e-books, the underlying source code
Alibaba learning essential knowledge
At last
A lot of people are saying that "science and useless", the reason actually produces useless, because they are learning with the match not on what you want, which means that their own is not enough to learn. Whether it is learning or work, you should have the initiative, so if manufacturers have a dream, then they would have their own efforts to achieve it.
More learning materials are free to run, and finally I wish you good health and successfully get the offer favorite!