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Self-study IT network Linux load balancing video tutorial

Course Intermediate 10976

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Shangxuetang MySQL video tutorial

Course Advanced 17039

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Band of Brothers front-end example display video tutorial

Course Advanced 10737

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

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Sorting HTML tables: a step-by-step guide

I'm not an HTML expert at all. I programmed the microcontroller and started going off on tangents. I have created an html document to display a table of microcontroller registers, register addresses and register descriptions. I have created a table with 3 columns and about 120 rows. Some register addresses are bit addressable - if their address ends with 0 or 8. I want to highlight these "special" register addresses - by showing them in red. So in table cells where the register address ends with 0 or 8, I use "" and "" to surround the address value. My table has 3 columns: register, address and description.

2023-10-31 16:45:43

Ways to fix issue 2003 (HY000): Unable to connect to MySQL server 'db_mysql:3306' (111)

I recently tried to containerize my FastAPIPython server (also for replication/doubling purposes). Before, I had just a MySQL server in a Docker container and everything was fine, but when I also made my web server a service, it couldn't connect to the MySQL server, so now the application doesn't work. Below is the code snippet of the server database initialization connector in the application fromfastapiimportFastAPIimportmysql.connectorapp

2023-09-05 11:18:47

Experiment with sorting after query limit

So this is my first question here, please forgive me if something is wrong. I'm trying to make a sort query based on constraints. So there is a Customers table with 90 records. I want to first perform a query limited to 3 records, and then sort the results of this query by a column called ContactName. I think this might be a nested query. Nested queries run fine in SQLServer, but don't know how to implement it in MySQL. Limit query: Select*fromcustomerslimit

2023-09-05 14:46:42

CSS Grid: Create new row when child content overflows column width

I have a two column layout based on CSS grid. When the content of the second column exceeds 1fr I want to create a new row. As it currently stands, the content simply overflows the column. One requirement of this layout is that the items in the right menu column are in one row. I achieve this with: .right-menu{...grid-auto-flow:columndense;...} If I remove the grid-auto-flow attribute, the overflow stops. However, the items are now stacked into multiple rows, which is not what I want. I also tried converting .ri

2023-09-05 15:18:28

PHP full text search functionality using AND, OR and NOT operators

Newbie question: I'm trying to implement a full text search on a search string using php and eloquent. $searchstring="+(victimsuspect)+crime-covid";$searchresult=RssItem::whereRaw("MATCH(description)AGAINST('$searchstring'INBOOLEANMODE)")->ge

2023-09-05 15:06:32

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Can git be used for microcontroller development?

Course Introduction：With the continuous development of Internet technology, version control tools have become an indispensable part of the program development process, which can effectively improve the efficiency and quality of program development. As a popular distributed version control system, Git has become the tool of choice in various development fields. So for microcontroller development, can Git also be used for version control? This article will discuss the basics of microcontroller development, the characteristics of Git, and the feasibility of using Git in microcontroller development. 1. Basic microcontroller development Microcontroller refers to an integrated central processing unit

2023-05-17 comment 0 724

Microcontroller selection in Java microservice architecture

Course Introduction：In Java microservices architecture, the microcontroller is responsible for managing and coordinating components. The main types are centralized and distributed microcontrollers. Consider performance, scalability, fault tolerance, and monitoring when choosing. Commonly used microcontrollers include SpringCloudGateway, Istio, Kong and HAProxy. The sample code shows a practical case of using Spring Cloud Gateway as a microcontroller.

2024-06-04 comment 0 751

Can golang write microcontroller?

Course Introduction：Go can write microcontrollers. We can use tinygo to compile the Go language program, and then use the burning tool to burn the compiled program into the microcontroller.

2020-03-27 comment 0 7202

What is a microcontroller? what's the effect?

Course Introduction：Microcontroller, also known as single-chip microcontroller, is an integrated circuit chip. It integrates a computer system onto a chip, which is equivalent to a microcomputer. Microcontrollers are used in a wide range of applications. Once used in various products, they can upgrade the products. The adjective "intelligent" is often placed in front of the product name.

2019-06-03 comment 0 20110

What is the difference between microcontroller and plc

Course Introduction：Differences: 1. The development cost of microcontroller is low, but it is troublesome to develop; while the development cost of PLC is high, but the development cycle is short, the results are quick, and the reliability is high. 2. PLC has a certain degree of interchangeability, guaranteed quality, and programming software is moving towards standardization; while microcontroller application systems have widely varying functions and uneven quality, making it difficult to learn, use, and maintain. 3. The programming language of the microcontroller is C or assembly language, or its own programming language is used; there are many programming languages for PLC, such as ladder diagram language, instruction list language, function module diagram language, and structured text language.

2022-10-21 comment 0 31774

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