Java developers are the same three years what he got on three sides Ali advanced development of offer

How can I get the offer manufacturers, absolutely no grasp of technology, then we would have to keep learning

And started looking for a job interview is the same would ask some of the same problems, except that now the interviewer will focus more on why that is focused on depth rather than breadth. 3 years, 5 years, 10 years are engaged in personal technology career planning in a bucket, three-year deal with most of the business logic, develop good ideas and norms, the basics still lacking.

How did he win Ali and other manufacturers offer it, today shared his secret weapon, the US group senior architect finishing Java core knowledge, interview the interviewer will ask knowledge points, chapter points, including a lot of knowledge, These include the basic knowledge, Java collections, JVM, multi-threaded, spring principle, micro-services, Netty and RPC, Kafka, diary, design patterns, Java algorithms, databases, Zookeeper, distributed caching, data structures, and so on.

When looking for work, in addition to the salary in line with individual career planning it is also very important. Without further ado, following is a summary of recent interviews Ali interview questions.

Since the entire document more comprehensive, more content, so I share the knowledge there may be some omissions, and messy, the entire core knowledge points are collated documents

JVM

1. Thread
2. JVM memory area
3. JVM runtime memory
4. And garbage collection algorithm
5. JAVA four kinds of reference types
6. GC generational collection algorithm VS partition collection algorithm
7. GC garbage collector
8. JAVA IO / NIO
9. JVM class loading mechanism

 

 

 

JAVA collection

1. The interface and implementation inheritance
2. List
3. ArrayList (array)
4. Vector (array implementation, thread synchronization)
5. LinkList (list)
6. Set
7. HashSet（Hash表）
8. TreeSet (binary)

 

 

 

JAVA multithreading

1. JAVA concurrent knowledge base
2. JAVA thread implementation / creation mode
3. 4 kinds of thread pool
4. Thread Life Cycle (state)
5. 4 ways to terminate the thread
6. the difference between sleep and wait
7. start and run difference
8. JAVA background thread
9. JAVA lock
10. Basic programming method 4.1.11. Thread context switching
11. Synchronization lock and deadlock
12. Principle thread pool
13. JAVA blocking queue principle
14. CyclicBarrier, CountDownLatch, Semaphore usage
15. The role of the volatile keyword (variable visibility, prohibit reordering)
16. 如何在两个线程之间共享数据

 

 

 

JAVA基础

1. JAVA异常分类及处理
2. JAVA反射
3. JAVA注解
4. JAVA内部类
5. JAVA泛型
6. JAVA序列化(创建可复用的Java对象)
7. JAVA复制

 

 

 

Spring 原理

1. Spring 特点
2. Spring 核心组件
3. Spring 常用模块
4. Spring 主要包
5. Spring 常用注解
6. Spring第三方结合
7. Spring IOC原理
8. Spring APO原理
9. Spring MVC原理
10. Spring Boot原理
11. JPA原理
12. Mybatis缓存
13. Tomcat架构

 

 

 

微服务

1. 服务注册发现
2. API 网关
3. 配置中心
4. 事件调度（kafka）
5. 服务跟踪（starter-sleuth）
6. 服务熔断（Hystrix）
7. Hystrix断路器机制
8. API管理

 

 

 

Netty 与RPC

1. Netty 原理
2. Netty 高性能
3. Netty RPC实现
4. 关键技术
5. 核心流程
6. 消息编解码
7. 通讯过程
8. RMI实现方式

 

 

 

分布式缓存

1. 缓存雪崩
2. 缓存穿透
3. 缓存预热
4. 缓存更新
5. 缓存降级

 

 

 

网络

1. 网络7层架构
2. TCP/IP原理
3. TCP三次握手/四次挥手
4. HTTP原理
5. CDN 原理
6. 分发服务系统
7. 负载均衡系统
8. 管理系统

 

 

 

日志

1. Slf4j
2. Log4j
3. LogBack
4. Logback优点
5. ELK

 

 

 

Zookeeper

1. Zookeeper概念
2. Zookeeper角色
3. Zookeeper工作原理（原子广播）
4. Znode有四种形式的目录节点

 

 

 

Kafka

1. Kafka概念
2. Kafka数据存储设计
3. partition的数据文件（offset，MessageSize，data）
4. 数据文件分段segment（顺序读写、分段命令、二分查找）
5. 数据文件索引（分段索引、稀疏存储）
6. 生产者设计
7. 负载均衡（partition会均衡分布到不同broker上）
8. 批量发送
9. 压缩（GZIP或Snappy）
10. 消费者设计

 

 

 

RabbitMQ

1. RabbitMQ概念
2. RabbitMQ架构
3. Exchange 类型

 

 

 

设计模式

1. 设计原则
2. 工厂方法模式
3. 抽象工厂模式
4. 单例模式
5. 建造者模式
6. 原型模式
7. 适配器模式
8. 装饰器模式
9. 代理模式
10. 外观模式
11. 桥接模式
12. 组合模式
13. 享元模式
14. 策略模式
15. 模板方法模式
16. 观察者模式
17. 迭代子模式
18. 责任链模式
19. 命令模式
20. 备忘录模式

 

 

 

Due to copy too long friends who want to receive this core knowledge can focus on my private letter reply [architecture] to get free information on the way to receive it!

After reading the above, I believe we have a clear goal and direction, the next step is to find learning materials, and we have prepared for you a set of system architects and learning materials package BAT interview data, for your reference, learning kit contents and data collection methods are as follows

The architecture of the video system Redis

 

 

 

Spring-source architecture of the video system

 

 

Friends want to receive this core knowledge can focus on my private letter reply [architecture] to get free information on the way to receive it!