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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11423

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 17716

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 11416

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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How to use Java code to find a specified type of surrounding business district through the location search API on Baidu Maps?

Course Introduction：How to use Java code to find a specified type of surrounding business district through the location search API on Baidu Maps? Introduction: In modern society, people have become very important for information about the surrounding business districts. Whether it is tourism or business inspection, knowing the situation of the surrounding business districts can provide a lot of convenience. Baidu Maps provides a location retrieval API that allows us to obtain business district information around a specified location through programming. This article will introduce how to implement this function using Java code. Prerequisite preparation: before using Baidu Map API

2023-07-31 comment 0 1141

Python programming skills: How to obtain bus stop information based on Baidu Map API

Course Introduction：Python programming skills: How to obtain bus stop information based on Baidu Map API Introduction: When developing positioning or navigation applications, how to obtain bus stop information is a common requirement. Baidu Maps provides a powerful API interface that can easily obtain various geographical information. This article will introduce how to use Python programming language combined with Baidu Map API to obtain bus stop information, and provide code examples. 1. Preparation: First, we need to install the Requests library. #InstallRequ

2023-07-30 comment 0 2302

How to store and retrieve large object data using Oracle database in PHP

Course Introduction：How to use Oracle database to store and retrieve large object data in PHP Introduction Oracle database is a powerful relational database management system that is widely used in enterprise-level application development. During the development process, it is often necessary to store and retrieve large object data, such as pictures, audio, and video. This article will introduce how to use Oracle database in PHP to process these large object data, with code examples. 1. Storage of large object data In Oracle database, there are two main types of large object data.

2023-07-13 comment 0 1735

GraphRAG enhanced for knowledge graph retrieval (implemented based on Neo4j code)

Course Introduction：Graph Retrieval Enhanced Generation (GraphRAG) is gradually becoming popular and has become a powerful complement to traditional vector search methods. This method takes advantage of the structural characteristics of graph databases to organize data in the form of nodes and relationships, thereby enhancing the depth and contextual relevance of retrieved information. Graphs have natural advantages in representing and storing diverse and interrelated information, and can easily capture complex relationships and properties between different data types. Vector databases are unable to handle this type of structured information, and they focus more on processing unstructured data represented by high-dimensional vectors. In RAG applications, combining structured graph data and unstructured text vector search allows us to enjoy the advantages of both at the same time, which is what this article will discuss. structure

2024-06-12 comment 0 1247

What are the commonly used search tools?

Course Introduction：Commonly used search tools include search engines, databases, metasearch engines, directories, social media, readers, professional websites, etc. Detailed introduction: 1. Search engines: such as Google, Bing, Baidu, etc., can search and return relevant web pages, pictures, videos and other information based on the keywords entered by the user; 2. Databases: such as literature databases, patent databases, news databases Etc., these databases collect various types of information, and users can query through keywords, authors, topics, etc.; 3. Meta-search engines, etc.

2023-12-11 comment 0 5630

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