This article is mainly to learn Dark horse programmer Redis entry to actual combat tutorial, in-depth analysis of the underlying principle of redis + redis distributed lock + enterprise solution + dark horse comment on the actual project income from
1 Introduction to Redis
Redis is a key-value NoSql database. The key-value type means ...
Posted by Bulbe on Wed, 09 Nov 2022 20:22:25 +0300
1. What is reflection?
Its core essence is actually a string-based event-driven operation, which manipulates the properties or methods of objects in the form of strings.
2. The advantages of reflection
A concept is proposed to understand what its advantages are, so that we can understand why reflection is used.
2.1 Scene Construction
Posted by sajidfiaz on Wed, 09 Nov 2022 05:18:12 +0300
Table of contents
1. Four high-performance IO models in server programming
1. Block IO
2. Non-blocking IO
4. Signal drive
2. Blocking IO
3. Non-blocking IO
1. The difference between blocking IO and non-blocking IO
2. How to set the non-blocking attribute to the file descriptor----fcntl() ----- man 2 fcntl
4. Multiple ...
Posted by vornn on Wed, 09 Nov 2022 03:11:14 +0300
Vue3 custom Hooks definition:
Personal understanding: some reusable methods hang like hooks and can be introduced and called at any time to achieve the goal of high cohesion and low coupling, and they should all be considered hooks;
Why does Vue3 use custom Hook? :
Conclusion: It is to make the Composition Api more useful and fuller, and to m ...
Posted by NiXXeD on Mon, 07 Nov 2022 10:37:48 +0300
Table of contents1. The principle of opening and closing2. Single Responsibility Principle3. Liskov substitution principle3.1 Before use3.1. After use4. Dependency Inversion Principle4.1. Before use4.2 After use5. Interface isolation principle5.1. Before use5.2. After use6. Law of Demeter7. Principles of synthesis and reuse8. Code written in th ...
Posted by $username on Mon, 07 Nov 2022 08:47:07 +0300
The relationship between the core components of mybatis can be represented by the following diagram:
Among them, add "I" before the class name to indicate the interface
As can be seen from the figure, in addition to Configuration, the class name of each class contains a "SqlSession ...
Posted by egmax on Mon, 07 Nov 2022 05:38:32 +0300
A process is a movement activity of a program in a computer on a certain data set. It is the basic unit of resource allocation and scheduling in the system, and the basis of the operating system structure.
// Open the specified program
Process p = Process.Start(@"C:\Program Files\Google\Chrome\Application\chrome.exe");
// kill ctrip
Posted by mdomel on Sun, 06 Nov 2022 14:17:27 +0300
Preview the video of multiple channels (cameras) in HIKVSION's NVR (Network Disk Video Recorder) in Vue:
The WEB control development kit is used for the NVR video preview above, which requires the computer to install the plug-in, and the browser needs to be in the
Posted by YoussefSiblini on Sun, 06 Nov 2022 12:02:27 +0300
QCheckBox is a check box, which is often used for non-mutually exclusive selection of forms, and is used in the scenario of "multiple selection and multiple".
Checkboxes are used in both office word and PhotoShop, as follows:
1. Create a QCheckBox
QCheckBox has two constructors, both of which specify the ...
Posted by magic-eyes on Sun, 06 Nov 2022 04:12:17 +0300