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Phase 1-10
[10] Redis interview FAQ
How about hashCode() and equals()?
How many methods are there for the Object class?
How to implement distributed lock in Redis?
How many ways to write a singleton?
[05 Issue] How to ensure the sequential nature of messages in message queues?
[04 Issue] How to handle id primary key after database and table are divided?
How to decide whether to use HashMap or TreeMap?
Can you talk about the life cycle of beans in the Spring framework?
【01期】 What are the differences and connections between Spring, SpringMVC, SpringBoot and SpringCloud?
11-20
Do you know why HashMap is thread-unsafe?
[19] Why aren’t Java threads Running?
Question: What is Java serialization? Why? How to do?
How to use ArrayList or LinkedList?
Can you talk a little bit about how HashMap resolves hash collisions
Talk about these common multithreaded interview questions
Can you tell me the difference between a process and a thread
[13] Talk about Redis expiration strategy
What is the implementation principle of single sign-on in a project?
[Issue 11] Distributed system interface, how to avoid duplicate submission of forms?
21-30
How does HashMap work?
Have you ever been asked about Java Collections?
ZooKeeper interview stuff
Can you answer all these questions?
[Issue 26] How to tell if an object is alive? (or how GC objects are judged)?
Have you ever been asked these three common interview questions?
[24] Please talk about the advantages and disadvantages of singleton mode, matters needing attention, and usage scenarios
I/O synchronous, asynchronous, blocking, and non-blocking
[Issue 22] Why message queues? What are the benefits of using message queues?
What is the difference between Comparable and Comparator in Java
31 to 40
What is redis avalanche, penetration and breakdown? What happens when Redis crashes? What is the response
Do you know how Redis strings are implemented?
[Issue 33] Discuss the validity and invalidity conditions of joint indexes respectively
Why split the database? What are the methods?
Talk about your understanding of how Java threads communicate with each other
How to stop a running thread?
Please explain the class loading process, class loading mechanism and custom class loader in detail
[Issue 38] A guide to TCP and HTTP interviews
Q: Here’s everything you need to know!
Talk about the inner workings of a thread pool
41 to 50
[41] A list of must-ask algorithms for data structures
[42] The binary heap of the required data structure algorithm questions
[43] The binary tree foundation of the required data structure algorithm questions
[Issue 44] Dichotomous search algorithms for must-ask data structure algorithms
[45] Take a look at the basic sorting of the must-ask data structure algorithms
[46] Quick sorting of must-ask data structure algorithms
【 volume 47 】 Six categories of binary tree interview questions summary answers
What is zero copy of Netty?
Interviewer: Is SpringMVC’s controller a singleton?
【50 issues 】 What is the difference between ClassNotFoundException and NoClassDefFoundError
51 to 60
Tell me what you know about the difference between BeanFactory and FactoryBean
Memorize a simple Java interview question with a high error rate!
Interviewer: After talking about the database sub-table, how do you solve the transaction problem?
[54] What is Java serialization? Why? How to do that?
[Issue 55] You’ll often be asked about Java reference types in an interview
You are familiar with concurrent programming. What are the different types of Java locks
Q: What principles does MySQL follow when building an index?
Some of the most frequently asked MySQL interview questions.
[issue 59] How does MySQL index improve query efficiency? (MySQL interview second play)
[Issue 60] Can repeatable reads at transaction isolation level be illusionproof? (MySQL interview 3 play)
61-70 period
MySQL > alter table lock table lock table lock table lock
【62 】 Explain the difference between inner join and outer join in MySQL.
MySQL > create index by B+ tree MySQL > create index by B+ tree
[issue 64] MySQL services occupy 100% of the CPU, how to troubleshoot the problem? (MySQL interview 7 play)
What is IOC in Spring? What are the benefits?
Talk about your understanding of HashMaps
[Issue 67] How does ConcurrentHashMap keep threads safe?
Interviewer: Are you familiar with concurrency? Talk about Synchronized and how it works
Interviewer: Are you familiar with concurrency? Talk about collaboration between the threads (wait/notify/sleep/yield/join)
Interviewer: Are you familiar with concurrency? Talk about the use of volatile and how it works
71-80 period
Interviewer: Are you familiar with concurrency? Talk about your understanding of several thread pools commonly used in Java
Interviewer: Are you familiar with concurrency? Talk about the difference and use of synchronized and Lock
Interviewer: What’s the difference between Spring and Spring Boot?
Interviewer: Are you familiar with multithreading? Talk about the benefits of thread pools?
Interviewer: Tell me about Redis’s expiration key deletion strategy. (high frequency)
Q: How can I delete a List while iterating through it?
This is an interview question that tests your understanding of Java
【 第 78期】 The interview questions in Java are summarized here for you.
The life cycle of a Bean in Spring is as follows:
[Issue 80] Describe three ways Java creates threads and compare them
81-90 period
Interviewer: Talk about capacity and expansion implementation in HashMap
【82 】 When asked about SQL optimization in an interview, you should read this article.
[83] What is the difference between Redis and MongoDB? Just look here
What can Design patterns ask in an interview? For example, there are three singleton implementations
[issue 85] Six principles of Java object-oriented design
A String of interview Questions and answers
Q: Why should Java serialization and deserialization implement Serializable interface
Interviewer: Can you talk about how interface beans are injected in Spring?
Q: How many HTTP requests can a TCP connection send?
Interviewer: Talk about the idea of using Redis to achieve a large-scale post count
91-100 period
Interviewer: What design patterns does Spring use? Name three
Interviewer: You say you are proficient in Java concurrency, so tell me about J.U.C.
【93 】 What should I do if MY Redis memory is full?
Interviewer: Are you familiar with Redis and how did you optimize Redis memory in your project
Interviewer: How do you deal with the connection timeout of Redis?
[Issue 96] Check out some common interview questions about Nginx
[97] Check out 8 data structures that are commonly asked in job interviews
Interviewer: Tell me about your understanding of the Java GC mechanism.
Redis: What are you going to do for a job interview?
Interviewer: Must BigDecimal never lose precision?
101-110 period
Interviewer: Are you familiar with Java concurrency? Let’s talk about ThreadPoolExecutor, the JUC thread pool
[Issue 102] How to access the massive data in Redis correctly? The service will not fail!
All I can talk about in interviews is projects, and they fail me!
【104 】 The most comprehensive database interview questions in history, before the interview brush!
Interviewer: Will the Dubbo service still be available after the registry is down?
Interviewer: Must Finally be executed in Java?
The Java memory region (runtime data region) and the Memory Model (JMM)
Interviewer: Do you really know how Java classes are loaded?
Interviewer: Why do we say StringBuilder is thread-unsafe?
Q: How does Redis distributed lock solve lock timeout problem?
111-120 period
I’ll explain to you exactly how HTTPS works
Interviewer: Why choose B+ tree as database index structure? Talk about your understanding
Q: How should THE API interface be designed? How to ensure safety? How do I sign? How to prevent weight?
[issue 114] Mid-advanced development, can’t interview a little Docker really can’t!
【115期】TCP protocol interview 10 even ask, always use
[Issue 116] MySQL index pros and cons, when to create an index, indexes, and SQL statement optimization
Interviewer: Are you familiar with the JVM? Why does the new generation memory need to have two Survivor zones?
Interviewer: Do you really know the difference between I = I ++ and I = ++ I?
[119] How to deal with high concurrent traffic in a project
Interviewer: What are micro services?
121-130 period
Interviewer: What is a circuit breaker? What is service degradation?
【 Issue 122 】 Talk about some SpringCloud frequently met questions and answers
Solve those difficult and complicated questions
Interviewer: Let’s talk about the database design ideas for microservices
[Issue 125] Illustrate the application scenarios of message queues and the comparison of ActiveMQ, RocketMQ, Kafka, etc
[Issue 126] Message queue interview barrage
Interviewer: You said you used ZooKeeper, so tell me about its basic principles
Select, poll, epoll in IO multiplexing
[129] I’m not afraid of being asked a HashMap in an interview
Interviewer: Can you tell the difference between distributed locks, process locks, and thread locks?
131-140 period
【131 】 Interview will be the source of ArrayList analysis & handwritten ArrayList
[132] When asked about the Spring container IOC initialization process, I will throw this article at him
Interviewer: You said you are familiar with MySQL transactions, so let’s talk about how transactions are implemented.
Interviewer: Do you know how Redis internally implements its strings?
[Issue 135] discuss the differences between redo logs, rollback logs, and binary logs in MySQL
You can talk about the difference between synchronized object locking and class locking in Java
Interviewer: Getting to the basics, can you tell me the difference between Java deep copy and shallow copy
Interviewer: Talk about the hasNext(), next(), and remove() methods used in Iterator
[139] Interview will be LinkedList source analysis
[issue 140] Is the Spring Controller singleton or multi-instance? How to ensure concurrency security
141-150 period
[Issue 141] Interview will be HashMap source analysis
Why B+ tree is a better structure for indexing
Do you know how Java implements communication between threads?
【144 】 In the basics section of the exam, can you tell the principle of TreeMap implementation and common methods?
In the first part of this article, we will discuss the basic principles and common methods of Java collection HashSet
Interviewer: Can you tell me how SpringBoot auto-assembler works
Question: How many ways can you describe the distributed transaction problem?
[Issue 148] The most comprehensive Java exception interview and solution
Interviewer: Can you tell the difference between checked exceptions and unchecked exceptions in Java?
Interviewer: What problems do Redis features solve?
151-160 period
Talk about the positioning of ZooKeeper: What problems can it solve? What problem does it not solve?
Interviewer: Can you name some of the primary/secondary replication methods in MySQL?
Interviewer: Talk about the difference between the common Arraylist and Linkedlist
Interviewer: Can you talk a little bit about how Elasticsearch queries data?
Interviewer: Have you ever encountered a log4j2 thread blocking? How do you solve the problem?
Interviewer: Talk about thread safety issues and solutions for SimpleDateFormat
Interviewer: Let’s talk about the difference between in and not in, exists and not exists in SQL
After reading this swastika, you won’t have to worry about TCP/IP anymore
Interviewer: Tell me the pros and cons of Redis persistence
Interviewer: Can you name several ways in which the Springboot project can be launched?
161-170 period
Here’s a copy of SpringBoot’s usual notes
[Issue 162] Redis interview questions and distributed cluster interview questions
Interviewer: Can you talk about some of the ways that the database achieves the ultimate consistency of caching?
[164] What interview questions can be asked around Spring AOP?
Interviewer: What do you know about MySQL partitions?
Find out how ElasticSearch works and you won’t have to worry about being asked in an interview!
Interviewer: How does reflection affect performance, and exactly how slow is it?
Interviewer: How much do you know about the use of reflection, which is everywhere in the frame?
Interviewer: Let’s analyze the MySQL/InnoDB lock process
Interviewer: Can you talk about innoDB record lock, gap lock and next-key lock separately?
171-180 period
Interviewer: Boy juice, how does Spring solve circular dependencies?
Interviewer: Redis or Zookeeper for distributed locks?
Interviewer: Tell me three ways that single sign-on can be implemented
[Issue 174] Huawei OD (outsourcing) social recruitment technology second interview, summary and review
Interviewer: Talk about how MySQL solves the illusion problem.
Interviewer: Do you know why the final keyword is added?
How to write a resume that will help you land an interview faster, regardless of hard skills?
Interviewer: Talk about how you optimized SQL during a project
How dare you go for an interview when none of the most common Linux commands do?
【 Episode 180 】 The Basics of Java
181-190 period
[Issue 181] HashMap Interview twenty questions!
【 第 182 】SpringCloud (2020)
Interviewer: The average response time of online service is too long. How to check?
【 第 184期】SQL Database interview questions and answers (50 sample questions)
Interviewer: Can you talk about the two ways Synchronized implements object locking and how it works?
Reel off eight uses of the Synchronized method
【 issue 187 】 Redis interview questions (including answers)
Interviewer: What are the differences between DELETE, TRUNCate and DROP
【 issue 189 】 Is it a good habit to add limit after delete
[Issue 190] MQ messaging middleware, what can an interview ask about?
191-200 period
Interviewer: Can you tell me the difference between SOA architecture and microservices architecture?
Interviewer: How are redundant threads in the thread pool reclaimed?
[Issue 193] How can decorator patterns be used to extend functionality without changing existing objects
[Issue 194] Redis — How do we execute commands that are not wrapped by third-party jars?
MySQL > select CASE WHEN, IF, IFNULL;
[issue 196] lay the foundation for a detailed tutorial on Stream, a new Java8 feature
[Issue 197] Huawei OD two rounds of technical interview records, a reference for the future!
Interviewer: Can you explain the principle of method overloading and method rewriting?
[Issue 199] 100% use of hashCode() and equals() methods and their usage specifications, do you understand?
Interviewer: Can you talk a little bit about how SpringMVC works?
. To be updated