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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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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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Java JMX Exploration: Opening New Horizons in Monitoring and Management

Course Introduction：What is JavaJMX? JavaManagementExtensions (JMX) is a set of specifications for advanced management functions of the Java platform. It provides a unified framework for monitoring and managing Java applications and JVMs wherever they are deployed. JMX architecture JMX architecture includes the following key components: MBean (ManagedBean): represents a manageable component in an application or JVM. MBeanServer: Central registry for registering, unregistering, and managing MBeans. MBean proxy: Exposes the proxy service of local MBean on the remote system. JMX client: used to communicate with MBeanServer and perform management

2024-02-20 comment 0 1241

The Art of Java JMX: Taking Monitoring and Management to the Next Level

Course Introduction：Advantages of JavaJMX JMX provides many advantages to Java applications, including: Centralized Monitoring and Management: JMX enables developers to centrally monitor and manage multiple Java applications from a single console. This can greatly simplify the management tasks of complex applications. Improved observability: JMX provides a standardized framework for exposing application metrics and status information. This allows monitoring tools and management systems to easily access and analyze this information, improving application observability. Dynamic management: JMX allows applications to be dynamically managed at runtime. Developers can remotely change configuration settings, trigger actions, or obtain application status information without restarting the application. JMX ArchitectureJMX Architecture

2024-02-20 comment 0 349

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