Interview: Suzhou BOE R&D Interview

First introduce myself, then the technical interviewer develops questions, then a business interviewer, and finally HR asks questions, asking family members, whether they have a girlfriend, development plans, etc. The following are technical questions:
1. Tell me about the order process of the mall?
2. How to prevent multiple requests?
3. Four characteristics of database transactions?
4. Usage of final keyword
5. Redis usage scenarios, and how to deal with it after an avalanche?
6. Have you ever used a springboot monitor?
7, mysql coding understanding?
8. What is the meaning of http status code 302?
9. The difference between TCP and UDP?
10. Understanding of websocket long connection?
11. What problems did you solve in the project?
12. How to learn python?
13. Why leave?
14. The difference between cookie and session?