What kind of fairy interview book is this? After reading 25 topics for half a month, he actually won Ali P7offer? ? ? ? ? ? ?
Let me sneer it down~~ There are a total of 25 topics in this fairy interview book:
- Topic 1: JavaOOP Interview Questions
- Topic 2: Java Collection/Generic Interview Questions
- Topic 3: IO and NIO interview questions in Java
- Topic 4: Java reflection interview questions
- Topic 5: Java serialization interview questions
- Topic 6: Java Annotated Interview Questions
- Topic 7: Multithreading & Concurrent Interview Questions
- Topic 8: JVM interview questions
- Topic 9: Mysql Interview Questions
- Topic 10: Redis Interview Questions
- Topic 11: Memcached Interview Questions
- Topic 12: MongoDB Interview Questions
- Topic 13: Spring Interview Questions
- Topic 14: Spring Boot Interview Questions
- Topic 15: Spring Cloud Interview Questions
- Topic 16: RabbitMQ interview questions
- Topic 17: Dubbo Interview Questions
- Topic 18: MyBatis Interview Questions
- Topic 19: ZooKeeper Interview Questions
- Topic 20: Data Structure Interview Questions
- Topic 21: Algorithmic Interview Questions
- Topic 22: Elasticsearch Interview Questions
- Topic 23: Kafka Interview Questions
- Topic 24: Microservice Interview Questions
- Topic 25: Linux Interview Questions
Pay attention: The editor has compiled the interview questions + answers of these 25 topics into a PDF document, and the old iron in need can click on the portal ! !
Topic 1: JavaOOP Interview Questions
The detailed answers to JavaOOP interview questions are as follows:
Topic 2: Java Collection/Generic Interview Questions
Topic 3: IO and NIO interview questions in Java
1. IO flow in Java?
2. The difference between Java IO and NIO
3. What are the commonly used io classes
4. The difference between byte stream and character stream
5. Blocking IO model
6. Non-blocking IO model
7. Multiplexed IO model
8. Signal-driven IO model
9. Asynchronous IO Model
10. JAVA NIO
11. NIO buffer
12. NIO's non-blocking
13. Channel
14. Buffffer
15. Selector
Topic 4: Java reflection interview questions
1. In addition to using new to create objects, what other methods can be used to create objects?
2. Is it efficient to create objects through Java reflection or to create objects through new?
3. The role of java reflection
4. Where will the reflection mechanism be used?
5. Implementation of reflection
6. Classes that implement Java reflection
7. Advantages and disadvantages of reflection mechanism
8. Java Reflection API
9. Steps to use reflection (obtain the Class object, call the object method)
10. There are several ways to get the Class object
11. Use reflection to dynamically create object instances
Topic 5: Java serialization interview questions
1. What is java serialization and how to implement java serialization?
2. Save (persistent) objects and their state to memory or disk
3. Serialized objects are kept as byte arrays-static members are not kept
4. Serialized user remote object transmission
5. Serializable achieve serialization
6. WriteObject and readObject custom serialization strategy
7. Serialized ID
8. Serialization does not save static variables
9. The Transient keyword prevents the variable from being serialized into the file
10. Serialization (implemented in one deep clone)
Topic 6: Java Annotated Interview Questions
1. What are the four standard meta-annotations?
2. What are annotations?
Topic 7: Multithreading & Concurrent Interview Questions
The analysis of multi-threaded & concurrent interview questions is as follows:
Topic 8: JVM interview questions
Topic 9: Mysql Interview Questions
Topic 10: Redis Interview Questions
Topic 11: Memcached Interview Questions
Topic 12: MongoDB Interview Questions
Topic 13: Spring Interview Questions
Detailed answer:
Topic 14: Spring Boot Interview Questions
Detailed Spring Boot interview questions:
Topic 15: Spring Cloud Interview Questions
Topic 16: RabbitMQ interview questions
Detailed explanation of RabbitMQ interview questions:
Topic 17: Dubbo Interview Questions
Topic 18: MyBatis Interview Questions
MyBatis interview questions analysis:
Topic 19: ZooKeeper Interview Questions
Topic 20: Data Structure Interview Questions
1. Stack
2. Queue
3. Link
4. Hash Table
5. Sort Binary Tree
6. Prefix Tree
7. Red-Black Tree
8. B-TREE
9. Bitmap
Topic 21: Algorithmic Interview Questions
The algorithm interview questions are as follows:
Topic 22: Elasticsearch Interview Questions
1. How much do you know about elasticsearch, talk about your company's es cluster architecture, index data size, number of shards, and some tuning methods.
2. What is the inverted index of elasticsearch
3. What to do if there is too much data in elasticsearch index, how to tune and deploy
4. How does elasticsearch implement master election
5. Describe in detail the process of Elasticsearch indexing documents
6. Describe the process of Elasticsearch search in detail?
7. When Elasticsearch is deployed, what are the optimization methods for Linux settings
8. What is the internal structure of lucence?
9. How does Elasticsearch implement Master election?
10. For the nodes in Elasticsearch (for example, a total of 20), 10 of them choose one master, and the other 10 choose another master. What should I do?
11. How does the client select a specific node to execute the request when connecting to the cluster?
12. Describe in detail the process of Elasticsearch indexing documents.
13. Describe in detail the process of Elasticsearch updating and deleting documents
14. Describe in detail the process of Elasticsearch search
15. In Elasticsearch, how do you find the corresponding inverted index based on a word?
16. When Elasticsearch is deployed, what are the optimization methods for Linux settings?
17. Regarding GC, what should I pay attention to when using Elasticsearch?
18. How does Elasticsearch realize the aggregation of large amounts of data (on the order of hundreds of millions)?
19. In the case of concurrency, what if Elasticsearch guarantees consistent reading and writing?
20. How to monitor Elasticsearch cluster status?
21. Introduce the overall technical architecture of your e-commerce search
22. Tell me about your personalized search plan?
23. Do you know the dictionary tree?
24. How does spelling error correction work?
Topic 23: Kafka Interview Questions
The analysis of Kafka interview questions is as follows:
Topic 24: Microservice Interview Questions
Topic 25: Linux Interview Questions
Top 25 interview topics JavaOOP, Java collections/generics, IO and NIO in Java, Java reflection, Java serialization, Java annotations, multithreading & concurrency, JVM, Mysql, Redis, Memcached, MongoDB, Spring, Spring Boot, Spring Cloud, RabbitMQ, Dubbo, MyBatis, ZooKeeper, data structures, algorithms, Elasticsearch, Kafka, microservices, Linux, etc. are given to you in one pot at a time. The space is limited and it is impossible to display one question and one answer (already organized into PDF) , So if you need it, please forward it (it can help more people see it!), remember to forward it, and then
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