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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11325

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 17631

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 11335

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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关于使用redis防高并发超中奖品设置过期时间的一个疑问

业务大转盘抽奖活动奖品分实物和红包限制用户只能中一个实物使用redis防同一用户并发超领实物即中了多个实物获得奖池 {代码...} 若用户还未抽中实物, 且同一用户并发进入, 存在随机选择的奖品都为实物的可能...

2017-04-25 09:02:25

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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Mobile Roulette Lottery Code Sharing_Javascript Skills

Course Introduction：The carousel, also known as the lottery carousel, is generally composed of a circular panel with many prizes set on it. In front of the circular panel, there is also a fixed pointer. Below, the editor will share with you the mobile version Roulette lottery, friends in need can refer to it below

2016-05-16 comment 0 1703

jQuery realizes big carousel lottery activity imitating QQ music code sharing_jquery

Course Introduction：This article mainly shows the jQuery implementation code of the big carousel lottery imitating QQ music. Friends who need it can refer to it.

2016-05-16 comment 0 1378

jQuery implements carousel lottery with pop-up window and number of times (code)

Course Introduction：What this article brings to you is about the jQuery implementation of the carousel lottery (code) with pop-up windows and times. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

2019-03-29 comment 0 2259

Wechat applet development big carousel imitation Tmall supermarket lottery effect code sharing

Course Introduction：This article mainly introduces the big carousel imitation Tmall supermarket lottery example developed by WeChat applet. The detailed code is compiled here, which has certain reference value. Interested friends can refer to it.

2017-03-15 comment 0 2596

jquery implements the nine-square grid carousel lottery_jquery

Course Introduction：jQuery nine-square grid big carousel lottery code web page special effects, click the lottery button to start a random lottery to select prizes, you can set the starting position, number of prizes, number of rotations, and winning position parameters

2016-05-16 comment 0 1425

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