Preface
A passage that was swiped by Douyin: the epidemic in January, the closure in February, staying at home in March and April, just buffering in May and June, and flooding in July and August. As a programmer , gold nine silver ten is very precious, few people have grasped gold three silver four , now gold nine silver ten is in front of you, do you plan to ignore it? So when will the annual salary of one million, the dream of Dachang, and Bai Fumei be hooked with you?
Maybe you only know CRUD , maybe you already have enough project experience , maybe you have a complete technology stack , maybe you still don't know how to answer the interviewer's questions, maybe you don't know how to start, maybe. . . . . . Not long ago, about two weeks ago, my friend also participated in the interview for the Java post. Of course, I still need to make a summary after participating. Where can’t it? Where can I improve? Where needs to be supplemented and strengthened? Therefore, he also summarized some knowledge points about Java job interviews: multithreading, high concurrency, distributed, microservices, databases, design patterns, JVM, Spring principles, Kafka, networks, data structures and algorithms, machine learning...
Java interview technology stack sharing summary
01 Distributed
- 1. The characteristics of large-scale website system
- 2. The evolution and development of large-scale website architecture
- Three, split VS cluster
- Four, microservices VS SOA
- Fifth, the front and back ends are completely separated from the Rest specification
- Six, CAP three-in-two and Base theorem
02 middleware
- One, cache
- Second, the message queue
- Three, search engine
03 Big data and high concurrency
- 1. Spike architecture design
- 2. Development history of database architecture
- Three, MySQL's scalability bottleneck
- Fourth, why use NOSQL NOT ONLY SQL
- Five, traditional RDBMS VS NOSQL
- Six, the type of NOSQL database
- 7. How to store product information on Alibaba's Chinese website
- 8. Horizontal and vertical split of data
- Nine, distributed transactions
- 10. BitMap
- 11. Bloom Filter
- 12. Common current limiting algorithms
- 13. Negative cut balance
- 14. Consistent Hash algorithm
04 Database
- One, the database paradigm
- Two, database development specifications
- Three, database index
- 四、MyISAM vs InnoDB
- Five, the problems caused by concurrent transactions
- Six, transaction isolation level and lock implementation mechanism
- Seven, MVCC (multi-version concurrency control)
- Eight, gap lock and phantom reading
05 Design Patterns and Practice
- 1. The Five Principles of OOP SOLID
- Second, the design pattern
- Third, the agency model
- Fourth, aspect-oriented programming (AOP)
- Five, the factory model
- Six, inversion of control IOC
- Seven, the observer mode
- Eight, Zookeeper
06 Data structure and algorithm
- One, the tree
- Two, BST tree
- Three, BST tree
- Four, AVL tree
- Five, red and black trees
- Six, B-tree
- Seven, B+ tree
- Eight, dictionary tree
- Nine, jump table
- 十、 HashMap
- 10. ConcurrentHashMap
- Twelve, ConcurrentLinkedQueue
- 13. Topk problem
- 14. Resource pool thinking
- 15. JVM memory management algorithm
- 16. Container virtualization technology, Doocker thought
- 17. Continuous integration, continuous release, jenkins
Arrangement of Java core knowledge points (29 topics with single analysis)
07 JVM
- 2.1. Thread
- 2.2. JVM memory area
- JVM runtime memory
- Garbage collection and algorithms
- JAVA four reference types
- GC generational collection algorithm VS partition collection algorithm
- GC garbage collector
- JAVA IO / NIO
- JVM class loading mechanism
08 Java multi-threaded concurrency
09 Spring Principle
10 microservices
- Service registration discovery
- API gateway
- Configuration Center
- Event scheduling (kafka)
- Service tracking (starter-sleuth)
- Service Fuse (Hystrix)
- API management
11 Netty与RPC
- Netty principle
- Netty high performance
- Netty RPC implementation
- RMI implementation
- Protoclol Buffer
- Thrift
12 Network
- 7-layer network architecture
- TCP/IP principle
- TCP three-way handshake/four waved hands
- HTTP principle
- CDN principle
13 Distributed Cache
- Cache avalanche
- Cache penetration
- Cache warm-up
- Cache update
- Cache degradation
14 machine learning
- Decision tree
- Random forest algorithm
- Logistic regression
- SVM
- Naive Bayes
- K nearest neighbor algorithm
- K-means algorithm
- Adaboost algorithm
- Neural Networks
- Markov
At last
To be honest, whether you have just entered this industry or have been in this industry for many years, learning is the best and longest way to gain a foothold in this industry. Only by working hard to enrich yourself can you develop better . Everyone is squeezing their heads to the highest point, but there are very few people who persist to the end. If you want to stand at the top of the pyramid in this industry, time and hard work are the best testimony. Take time to learn. It will definitely bring corresponding returns, especially in the Internet industry, everything is possible.
If you want to learn or change yourself, then take action as soon as possible. Perhaps this Java beginners development guide can help you improve yourself.
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