It smells so good! Preparing for the golden nine silver ten, how to successfully join Ali, you may be the notebook

Write in front

Unknowingly, gold nine and silver ten came so quietly, have you now successfully entered the big factory? Or got the salary you expected? Or are you still on the way to find a job?

As we all know, 2020 is an extraordinary year, and almost all walks of life are reducing staffing. In this environment, programmers in particular will face greater challenges. And how to stand out is the dry goods that Xiaobian brings to everyone today.

 

First of all, let's take a look at the three aspects of the latest Ali technology. If it is you, can you pass it smoothly?

Ali side:

1. Introduce yourself, talk about your job search intentions and skills
2. What is the basic architecture of Tomcat?
3. JVM tuning, how to use it at work, what are the GC algorithms and recycling strategies
4. How is the thread pool implemented in Java? What are the core construction parameters for creating a thread pool?
5. What is the difference between Volatile and Synchronize?
6. What is the mechanism of GC? Is the basic principle of the garbage collector still talking about it? Can the memory be reclaimed immediately? How to actively notify the JVM for garbage collection?
7. The class loader parent delegation model mechanism?
8. The types and differences of collections, how to implement the bottom layer of HashMap (with changes in JDK1.8), and the difference between HashMap and ConcurrentHashMap?
9. How does Spring IOC manage the dependencies between Beans and how to avoid circular dependencies?
10. Design patterns in the creation of SpringBean?

Ali two sides:

1. Self introduction,
2. What are the names of the four transaction isolation levels supported by InnoDB? What is the difference between?
3. Talk about the characteristics of business
4. What is the MySQL isolation level?
5. How to understand the BTree mechanism?
6. Talk about the analysis of slow queries? What are the optimization methods commonly used in MySQL?
7. Talk about the realization of pessimistic lock and optimistic lock and SQL
8. Briefly describe the three-way handshake and four-way handshake process?
9. The difference between B+ tree index and Hash index?

Ali three sides:

1. Self introduction
2. MySQL lock concurrency?
3. How to prevent deadlock and ensure data consistency in high concurrency scenarios?
4. Algorithm and implementation of clustering and load balancing?
5. Briefly describe the sub-library and sub-table design?
6. What are the distributed dilemmas brought by sub-databases and sub-tables and corresponding strategies?
7. What is the locking mechanism?
8. How do Redis and Setnx commands implement distributed locks? How to use Redis for asynchronous queue? What are the disadvantages?

how about it? Do you feel that you still have a lot of room for improvement? Can't you wait to learn? Here, the editor presents the recently compiled Java architecture and interview topics for everyone. I wish everyone can get offers from major manufacturers! ! !

Java Object Oriented Programming

 

 

 

In order not to affect everyone's reading experience, the editor only took screenshots of some chapters. If there are friends who want to obtain deep learning, please pay attention to the way of receiving them at the end of the article.

This article runs through the full text with six main lines: object-oriented programming ideas, the syntax of the Java language, the principle of Java virtual machine execution of Java programs, the application in actual projects, design patterns and performance optimization techniques. Each chapter of the book will expand the content around several main lines, and according to the layout of the book, the depth of the content of each chapter is reasonably arranged.

The main content of this article includes: an overview of object-oriented development methods, the first Java application, data types and variables, operators, process control, inheritance, modifiers in the Java language, interfaces, exception handling, class life cycle, object Life cycle, internal classes, multithreading, arrays, Java collections, generics, Lambda expressions, input and output (I/O), graphical user interfaces, commonly used Swing components, Java commonly used classes, and Annotation annotations.

Java interview assault

 

Preparation before the interview

• How to prepare for an interview
• How to write a resume
• How should you answer if the interviewer asks you "Do you have any questions for me?"
• The interviewer asks what are your strengths and how should you answer?
• The interviewer asks what your shortcomings are and how should you answer them?
• Seven questions that most programmers care about before the interview

 

Java

• Java basics
• Java Collection Framework
• Jave multithreading
• Java Virtual Machine
• Design Patterns

 

Java core interview knowledge finishing

 

Basic concepts of JVM

JVM running structure diagram

The essence of MySQL technology

 

This article is aimed at the advanced users of MySQL, and explains in detail the advanced use technology of MySQL. The article explains each knowledge point and the methods and skills of database operation in detail. This article focuses on actual combat operations to help you gradually master various advanced technologies in MySQL.

This article mainly includes introduction to MySQL architecture, MySQL permissions and security, MySQL backup and restore advanced features of MySQL, MySQL locking mechanism, using MySQL Workbench to manage databases, SQL performance optimization, MySQL server performance optimization, MySQL performance monitoring, MySQL Replication, MySQL Cluster Actual combat, actual combat of MySQL's high-availability architecture in the enterprise. At the same time, this article also provides the source code of all examples, which you can view and call directly.

Spring Boot programming ideas (core articles)

 

 

This article begins with an overview of the core features of Spring Boot, and then discusses Auto-Configuration and SpringApplication. The full text of the discussion centered on Spring Boot, and the topics diverged to the Spring technology stack, JSR and Java. I hope to help you understand the evolution of Spring Boot from a global perspective; help you understand the principles of Spring Boot features through multiple comparisons; integrate standard specifications to help you master the philosophy of Spring Boot design.

1000 Questions for Internet Java Engineer Interview

 

The content covers: Java, MyBatis, ZooKeeper, Dubbo. Elasticsearch. Memcached, Redis, MySQL, Spring, Spring Boot, Spring Cloud, RabbitMQ, Kafka, Linux and other technology stacks.

 

to sum up

The interview is like a practice. You have accumulated in your usual work and life and maintained a good attitude. Even a momentary failure is nothing. Don't be discouraged and lose your fighting spirit because of the failure of the interview. Don't be complacent because you passed the interview. What awaits you is a better future.

From the basics of Java to the interview integration of various special knowledge points, the editor has sorted it out for everyone. I think the sharing of the editor is helpful to everyone, please help the editor like and forward it.

By the way, friends who want to learn more in depth, please forward + follow the editor, private message [learning] to get a free method immediately.