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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11389

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 17701

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 11397

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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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

Shortest way to convert all PHP types to string

I'm writing a general system that I hope can one day be applied to fields like medicine (i.e. it's "scientific"). I think the best way is to represent all the data in php with strings (true will be "true", false will be "false" and so on). The reason for this is that in php any value has a unique string representation (such as the php code itself). I post this question to speed up the design process of this program. Some values are easily converted to strings: numbers, booleans, etc. Some are not easy: objects, arrays, resources. I think the transfer object and

2023-09-05 15:34:44

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What is the basis for classifying computers internationally?

Course Introduction：Internationally, computers are classified based on their performance. Computers can be divided into supercomputers, mainframe computers, minicomputers, microcomputers, workstations and servers.

2020-11-16 comment 0 19949

How many categories does the IEEE classify computers into?

Course Introduction：ieee divides computers into 6 categories: personal computer (PC), workstation (WS), minicomputer (MiniComputer), mainframe (MAinfrAme), small supercomputer (MinisuperComputer) and supercomputer (SuperComputer).

2020-10-28 comment 0 14919

What does ioe architecture mean?

Course Introduction：The IOE architecture uses IBM minicomputers, Oracle databases, and EMC storage devices. All three are overseas IT giants. Among them, IBM represents hardware and overall solution service providers, Oracle represents databases, and EMC represents data storage.

2019-07-22 comment 0 19311

What are computers divided into according to their size?

Course Introduction：According to the scale of computers, computers can be divided into five categories: supercomputer, mainframe, medium-sized computer, minicomputer, and microcomputer. A supercomputer is a very large electronic computer; a mainframe, or mainframe, uses a dedicated processor instruction set, operating system and application software; a microcomputer is a smaller electronic computer composed of large-scale integrated circuits.

2020-12-24 comment 0 79815

What to do if HP APA mode setting causes packet loss for dual network cards

Course Introduction：1. Problem Description A user reported that HP minicomputer system access is very slow. 2. Alarm information Log in to your host scp3 through dial-up and check the relevant logs, including: syslog, eventlog, networklog, bdf, top, glance, ts99, crash, but no alarm or error was found. 3. Analyze the cause of the problem. This phenomenon has occurred on this host many times a year ago. After a comprehensive inspection of the host and network, no abnormalities were found. After restarting the host, the fault was restored. This time log in to your host scp3 through dial-up again and check the relevant logs, including: syslog, eventlog, networklog, bdf, top, g

2023-05-28 comment 0 1461

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