In this article, I’ve compiled some of the most important questions that an interviewer should ask during a job interview. These include basics, Java collections, JVMS, multi-threaded concurrency, Spring principles, microservices, Netty and RPC, Kafka, diaries, design patterns, Java algorithms, databases, Zookeeper, distributed caching, data structures, and more.
Because the knowledge point is more comprehensive, the content is more, so I summarized the core knowledge points in the Java interview into a document. The document has been uploaded to baidu cloud disk, the end of the article provides access to ~
The following are the main contents of the document:
JVM
thread
JVM memory region
JVM runtime memory
Garbage collection and algorithms
JAVA four reference types
GC generation collection algorithm VS partition collection algorithm
GC garbage collector
JAVA IO/NIO
JVM class loading mechanism
JAVA collection
Interface inheritance and implementation
List
ArrayList
Vector (Array implementation, thread synchronization)
LinkList
Set
HashSet
TreeSet
JAVA multithreaded concurrency
JAVA Concurrent Knowledge base
JAVA thread implementation/creation
Four thread pools
Thread life cycle (state)
There are four ways to terminate a thread
To sleep is different from to wait
Start is different from run
JAVA background thread
JAVA lock
Programming basics 4.1.11. Thread context switching
Synchronous locks and deadlocks
Thread Pool Principle
JAVA blocking queue principle
CyclicBarrier, CountDownLatch, Semaphore
The role of the volatile keyword (variable visibility, disallow reordering)
How do I share data between two threads
JAVA based
JAVA exception classification and processing
JAVA reflection
JAVA annotations
JAVA inner class
JAVA generics
JAVA serialization (creating reusable JAVA objects)
JAVA copy
Principle of the Spring
Spring characteristics
Spring Core Components
Spring Common Modules
Spring is mainly package
Spring Spring
Spring third-party integration
Principle of the Spring IOC
Spring APO principle
Spring MVC principles
Spring Boot principle
JPA principle
Mybatis cache
Tomcat architecture
Micro service
Service Registration Discovery
API gateway
Configuration center
Event scheduling (Kafka)
Service Tracking (starter-sleUTH)
Service fuse (Hystrix)
Hystrix circuit breaker mechanism
API management
Netty and RPC
Netty principle
Netty high-performance
Netty RPC implementation
The key technology
The core processes
Message codec
The communication process
RMI implementation
Distributed cache
Cache avalanche
The cache to penetrate
Cache warming
The cache update
Cache the drop
network
Network layer 7 architecture
Principle of TCP/IP
TCP three handshakes/four waves
Principle of HTTP
Principle of CDN
Distribution service system
Load balancing system
Management system
The log
Slf4j
Log4j
LogBack
Advantages of Logback
ELK
Zookeeper
Zookeeper concepts
Zookeeper role
How Zookeeper works (Atomic Broadcast)
Znode has four types of directory nodes
Kafka
Kafka concept
Kafka data storage design
Partition data file (offset, MessageSize, data)
Data file segment (sequential read and write, segment command, binary search)
Data file index (segmented index, sparse storage)
Producer design
Load balancing (partitions are evenly distributed among different brokers)
Batch send
Compression (GZIP or Snappy)
Consumer design
RabbitMQ
The RabbitMQ concept
The RabbitMQ architecture
Exchange type
Design patterns
Design principles
Factory method pattern
Abstract Factory pattern
The singleton pattern
Builder model
The prototype pattern
Adapter mode
Decorator mode
The proxy pattern
The appearance model
The bridge model
Portfolio model
The flyweight pattern
The strategy pattern
Template method pattern
Observer model
Iterative subpattern
Chain of Responsibility model
Command mode
Memo mode
After reading the above content, I believe you have a clear goal and direction, the next is to find learning materials, we have prepared a set of systematic architect learning materials and BAT interview materials for your reference!
Due to the limitation of the copy, the interview treasure book is shown in the form of screenshots. Interested partners forward this article + follow my private letter reply [interview information] for free
Interview review guide
Big factory interview scene
Java backend **** tip
Java surface by
JVM interview topics and **** Abort case
Kafka interview topics and answers
Linux interview topics and answers
Memcached Interview topics and answers
MongoDB interview topics and answers
MyBatis interview topics and answers
MySQL55 and the Qing case
Mysql | interview project and answer
21 Best practices for MySQL Performance Optimization
Netty interview topics and answers
Nginx interview topics and answers
Redis interview topics andTube case(on)
Redis interview topics and answers (II)
SpringCloud interview topics and answers
SpringMVC interview topics and answers
Micro service interview topics and answers
Most complete JVM interview topics and answers