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1, Short answer 1. Briefly describe the MySQL version used by your company, and specify the specific minor version and GA time? 5.6.38 5.7.20 2017-9-13 2. Please introduce the type of database you are familiar with and the representative product name? NoSQL:Redis Mongodb memcache RDBMS:Oracle MySQL MSSQL PG 3. Please briefly describ ...

preface   in many background management systems, there are clear permissions and role control, and of course, there is no lack of operation log records. This article will develop a logging function based on the AOP feature of Spring. Let's record the whole development project Quick start    using the AOP feature of Spring, fir ...

021. Delete the penultimate node of the linked list Title: Given a linked list, delete the penultimate node of the linked list, and return the head node of the linked list. Example: Input: head = [1,2,3,4,5], n = 2 Output: [1,2,3,5] Idea: Fast and slow pointers: the slow pointer is the head node, the difference between the f ...

prefaceHello, I'm Lin Sanxin. In the most easy to understand words, the most difficult knowledge point is my motto. The foundation is the advanced premise and my initial intention. As we all know, Promise is very important in our development. I think the use level of Promise can be divided into three levels1. Master the basic use of Promise2. M ...

Article catalog What is spring MVC A long time ago, SSH was the most popular architecture mode(   Spring   Struts encapsulates servlet s   hibernate  );–> Baidu Encyclopedia SSH Framework Then came SSM(   Spring   Struts   Mybatis  ) ; Note that it's not working here yet   Spring MVC &nbs ...

Java Memory Model Thread synchronization Thread synchronization mechanism is a set of data access mechanism suitable for coordinating threads, which can ensure thread safety The thread synchronization mechanism provided by the java platform includes lock, volatile keyword, final keyword, static keyword, and related API s such as obje ...

13. Look at the program and write the results class Fu{ public int num = 10; public Fu(){ System.out.println("fu"); } } class Zi extends Fu{ public int num = 20; public Zi(){ System.out.println("zi"); } public void show(){ int num = 30; System.out.println(num); System.out.println(this.num); System.out.prin ...

Previous points here: ↓ Summary of VUE interview questions (I) 11. What is the difference between v-if and v-show Reference answer: The v-show instruction allows an element to be displayed or hidden by modifying the CSS attribute of its display The v-if instruction directly destroys and rebuilds the DOM to achieve the effect of ...

1, IOC container IOC underlying principle Concept and principle of IOC 1. What is IOC? (1) Control inversion, and leave the object creation and calling process between objects to Spring for management (2) Purpose of using IOC: to reduce coupling 2.IOC underlying principle (1) xml parsing, factory schema, reflection IOC operation The ...

leetcode lecture on algorithm interview in Dachang 3. Dynamic programming Video tutorial (efficient learning): Click to learn catalog: 1. Introduction 2. Time and space complexity 3. Dynamic planning 4. Greed 5. Binary search 6. Depth first & breadth first 7. Double pointer 8. Sliding window 9. Bit operation 10. Recursion & ...