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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11343

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 17648

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 11354

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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Implementation of address book initial letter search function

Course Introduction：This time I will bring you the implementation of the first letter search function in the address book. What are the precautions for implementing the first letter search function in the address book? The following is a practical case, let's take a look.

2018-06-08 comment 0 3636

Try two recovery methods to solve the problem of accidentally deleted or missing iPhone address book contacts!

Course Introduction：What should you do if the address book contacts on your iPhone suddenly disappear or are accidentally deleted? How to recover lost Apple address book contacts? Have you ever encountered similar problems? For example, some address book contacts stored in the iPhone suddenly disappeared mysteriously, or were accidentally deleted by children, or even accidentally deleted by oneself. Can these lost address books in the Apple phone be recovered? I have compiled 2 methods to help you quickly retrieve contacts in your iPhone address book! 1. iCloud synchronized address book. When you find that iPhone address book contacts are lost, you must first check whether iCloud has backed up these contacts. After all, iCloud only provides 5GB of free storage space. If iClo

2024-01-15 comment 0 1103

Solve the problem of the other party not being able to hear the sound when calling on the mobile phone (repair the fault of the mobile phone call and let the other party hear your voice again)

Course Introduction：When we talk on mobile phones, sometimes we encounter the problem that the other party cannot hear our voice. This will not only affect normal communication, but may also lead to misunderstandings and inconvenience. To help you resume normal calls, here are some ways to solve the problem of not being able to hear the sound on the other end of a cell phone call. Check whether the microphone is noisy or damaged and then play to check the recording effect. When the other party cannot hear your voice, first check whether the microphone part of the phone is noisy or damaged. You can try to turn on the recording function to record a sound. Adjust the call volume and ringer volume Sometimes, the call volume or ringer volume on your mobile phone is set too low and the other party cannot hear your voice. This issue can be fixed by adjusting the volume control options in your phone's settings. Check if you are in silent mode but the other party is

2024-02-02 comment 0 2559

How to modify Alipay account_How to modify Alipay account

Course Introduction：1. First open the Alipay homepage and click [My] in the lower right corner to enter its interface. 2. Then click on your avatar above to enter personal information. 3. Then open [Alipay Account] to make modifications. 4. Finally, click on the Alipay account that is not bound to an email address. When modifying the bound mobile phone number, enter the mobile phone number that is registered with Alipay but not bound to an email address. You will be prompted to set up an Alipay number. 5. Users can set an Alipay number of 6-20 letters, numbers or combinations. After adding the Alipay number, it can be used for subsequent logins, and the mobile phone number can be used to receive text messages. It should be noted that after the user has successfully modified, he can only use his Alipay account to log in later.

2024-04-11 comment 0 1211

OnePlus 8T mobile phone pushes the official version of ColorOS 14.0.0.600: screen fingerprint unlocking, app call recording

Course Introduction：According to news on May 7, OnePlus 8T mobile phone launched the official version of ColorOS 14.0.0.600 (CN01) today. The installation package size is about 1.68GB, and it adds third-party application call recording and other system functions. The contents of this update are summarized as follows: The system has added support for call recording function of some third-party applications. New support for long pressing the volume down button to bring up the flashlight function. New desktop drawer mode support for initial letter fuzzy search function. New function for individually adjusting the application volume. Enjoy more. The personalized audio experience adds black screen fingerprint unlocking. When the screen is black, touch the fingerprint area with your finger to complete the unlocking directly without lighting up the screen. This improves the unlocking experience and optimizes the volume bar style display to improve operational convenience and visual consistency. Improve system stability

2024-05-08 comment 0 1194

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