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preface

BAT has a large number of talents and ordinary people. Although not all of them can reach the admirable technical level, after all, the platform is high, so their vision will be broad. Code is more demanding, so the average programmer is forced to be better; The average programmer will also be affected by the large number of talented people around him, and will be promoted faster.

Just take a look at the “Java Assault treasure book” inside the big factory today, this treasure book has been popular in the big factory for a long time, from the basic to the advanced and then to the architecture of the knowledge point everything, it will mainly need to learn the technology stack is divided into three stages:

  • **0-1 year introduction (solid foundation) : **Java foundation + Concurrent Programming +JVM Foundation + Design Pattern +SQL foundation and Optimization +HTTP/TCP protocol + algorithms and data structures + learning ability + source code +Redis+ understanding a message product

  • **1-3 years senior engineer (qualified programmer) **** : **JVM basic tuning + common framework source code +MySQL optimization + cache + familiar with message-oriented middleware (at least one) + familiar with microservices (at least one) + Internet project experience +Netty+ distributed technology

  • **4-5 years of experience (to improve the breadth and depth of technology) : ** Performance tuning + distributed technology + microservices + technology selection + distributed scenario issues + Internet project experience + project management + team management

1. 0-1 year introduction: Lay a solid foundation

1.Java Basics (Java exception classification and handling +Java Reflection +Java Annotations +Java inner Classes +Java Generics +Java serialization +Java replication)

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2. Concurrent programming (thread pool + lifecycle + lock + blocking queue +CAS etc.)

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**3.**JVM Basics (Threads +JVM memory region +JVM runtime memory + garbage collection & Algorithms +GC+IO/NIO+ class loading)

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4. Design Patterns (23 design patterns)

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5.SQL foundation and optimization

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6. HTTP/TCP protocol

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7. Algorithms and data structures

  • Java algorithm (binary search + sorting algorithm + backtracking algorithm, etc.)

  • Consistency algorithm (Paxos+Zab+Raft+NWR+Gossip+ consistency Hash)

  • Data structure (stack + queue + linked list + hash table + sorted binary tree + red-black tree +B tree + bitmap)

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8.Redis

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2. 1-3 years senior engineer: qualified programmer

1.JVM basic tuning

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2. Common framework source code (Spring+SpringMVC+Mybatis)

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3. Message Middleware (MQ+Kafka)

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4. The service

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5.Netty

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Note: Contains detailed explanation! Space is limited,Space is limited, click here for free.

3. 4-5 years of experience: improve the breadth and depth of technology

1. Performance tuning

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2. Micro service

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3. Distributed scenarios

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4. Project practice

  • High imitation of a big factory mall project

  • Order management system project of a large factory

  • API monitoring system

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