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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11273

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 17598

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 11309

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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codeigniter - PHP CI framework caching problem online etc.

CI goes to the database to query the results. If the cache is turned on in the configuration, it can be cached. However, it is cached in the form of files. If I use memcache to cache the results, is it unnecessary? There is another problem. The caching mechanism of CI itself is similar to memcache. Which one is more efficient? Wait online

2017-05-16 16:43:32

Ask the teacher about the weird problem of logging in

Sorry to cause trouble to the teacher, please ask the teacher: "I directly used the teacher's courseware code to test, but when I opened the login page for the first time every day, I successfully logged in and entered the page normally, but when I used logout() (or directly accessed the page to log in , prompting "Not logged in, please log in first" page), use the login method again (without modifying any content), click the OK login button, but there is no response, and the username and password database cannot be read (there is no response after entering the account and password casually) ), teacher, what is causing this? Restart the PHP toolbox, delete the cache, and change the browser

2018-10-11 21:39:31

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

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PHP database is based on PDO operation class (mysql)

Course Introduction：The content shared in this article is based on the PDO operation class (mysql) of the PHP database. Now I share it with you. Friends in need can refer to the content of this article.

2018-04-13 comment 0 2348

PHP operation memcache cache method sharing, memcache cache_PHP tutorial

Course Introduction：PHP operation memcache cache method sharing, memcache cache. Share how to operate memcache cache in PHP, memcache cache. The prerequisite for using memcache is to configure the memcahche environment on the server first! After confirming that memcahce can be connected normally, you can

2016-07-13 comment 0 836

Common problems and solutions for using Memcache cache in PHP

Course Introduction：In web applications, caching is a very important technology. Caching can greatly reduce the load on the database and server and improve the performance of web applications. Memcache is a high-performance distributed memory cache system commonly used in web applications. When using Memcache cache in PHP, some problems sometimes occur. This article will introduce these problems and their solutions. Problem 1: Unable to connect to the Memcache server. When using Memcache cache, the first problem you may encounter is that you cannot connect.

2023-05-16 comment 0 1248

Architectural design and implementation of Memcache cache in PHP

Course Introduction：1. Introduction and role of Memcache cache Memcache is a high-performance distributed caching system, originally developed by the LiveJournal team to cache database query results, page data, etc. In web applications, due to the large amount of access and data processing, it is often necessary to interact with the database, which will occupy a lot of resources and affect performance. At this time, adding a caching function to the application can reduce the load on the server and improve website performance. 2. Memcache cache architecture design 1. Use

2023-05-25 comment 0 1259

Solving the problem of simulated namespace and cache invalidation when using Memcache in PHP, memcache namespace_PHP tutorial

Course Introduction：Solve the problem of simulated namespace and cache invalidation when PHP uses Memcache, memcache namespace. Solution to simulated namespace and cache invalidation problems when PHP uses Memcache, memcache namespace cache namespace Memcache itself does not support namespaces, but we can use memcac

2016-07-12 comment 0 832

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