Course Intermediate  3444

Course Introduction：This set of courses is based on the design concept and data structure of MySQL index, index usage scenarios, index classification, index usage scenarios, index performance analysis, query optimization, slow query of MySQL index, etc. It mainly describes the solution of MySQL index optimization. It is very suitable for students who have basic knowledge of MySQL or have certain work experience. The course explains how to solve the problem of slow large-volume queries, how to write an efficient SQL, how to optimize query statements, what is the implementation principle of indexes, how to optimize indexes... and many other difficulties and interview points in SQL index optimization.

Course Elementary  12736

Course Introduction："AJAX Cross-Domain Solution: JSONP Video Tutorial" The core of ajax is the JavaScript object XmlHttpRequest. This object was first introduced in Internet Explorer 5 and is a technology that supports asynchronous requests. This video introduces the ajax cross-domain solution.

Course Advanced  44874

Course Introduction：This set of courses is an advanced course, including: query optimization and performance analysis of MySQL single table with tens of millions of data, mySQL master-slave principle and its application in high-concurrency systems, integration and use of Elasticsearch and PHP (Laravel), high concurrency The difference between system code and ordinary system code architecture and analysis of concerns, etc.

Course Intermediate  4567

Course Introduction：MySQL installation and configuration under Linux, database logical layering, parsing process, index, detailed analysis of SQL execution plan, principles to avoid index failure, optimization cases, common optimization strategies, slow SQL troubleshooting, simulation of massive data, lock mechanism, MySQL under windows and linux Master-slave replication.

Course Intermediate  8053

Course Introduction：Caching is a core component of current enterprise-level applications. Today's mainstream e-commerce, life services, live broadcast and other fields are inseparable from the use of cache. As the current mainstream caching technology, Redis has become the first choice for Internet companies. The cache structure design based on redis cluster currently accounts for half of the market in the same field.

Course Introduction：Overview of log analysis and troubleshooting of Nginx load balancing solution: With the rapid development of the Internet, the demand for high availability and performance is getting higher and higher. As a high-performance web server and reverse proxy server, Nginx is widely used in load balancing solutions in distributed systems. However, in actual use, the Nginx load balancing solution may also experience some failures, such as excessive server load, request timeout and other problems. This article will introduce how to solve these problems through log analysis and troubleshooting, and give specific codes.

2023-10-15 comment 0  1095

Course Introduction：PHP database connection error troubleshooting and solutions Introduction: When developing and maintaining PHP websites or applications, the database plays a vital role. However, you may encounter database connection errors due to various reasons. This article will introduce some common PHP database connection error troubleshooting and solutions to help developers quickly solve the problem. 1. Troubleshoot errors and check database credentials: First, make sure that the credentials (username and password) used to connect to the database are correct. You can view the related functions of database connection in PHP code

2023-09-10 comment 0  1463

Course Introduction：Implementing an efficient URL route resolution solution in PHP When developing web applications, URL route resolution is a very important link. It can help us implement a friendly URL structure and map requests to the corresponding handlers or controllers. This article will introduce an efficient URL routing resolution solution and provide specific code examples. 1. The basic principle of URL route parsing The basic principle of URL route parsing is to split the URL into different parts and match and map them based on the contents of these parts. Common UR

2023-10-15 comment 0  1098

Course Introduction：The function of checking the settlement status with the application provides users with a convenient and efficient way to help users understand the progress of their settlement application at any time, so as to better plan follow-up arrangements and improve work efficiency. Today, the editor will share with you a tutorial on checking the settlement status. If necessary, take a look together! Sharing the tutorial on checking the settlement status with the application 1. Open the application and enter the homepage. 2. Click More. 3. Click to check the settlement status. 4. Enter your name and ID number, and click to check the settlement status.

2024-07-15 comment 0  308

Course Introduction：Front-end nginx cannot call back-end php: troubleshooting and solution When your project includes both front-end and back-end, and the problem "front-end nginx cannot call back-end php" occurs during the debugging process, it may give you a headache. In order to solve this problem, we need to do some troubleshooting and debugging work. This article will introduce you to troubleshooting ideas and solutions in detail. Troubleshooting ideas Before troubleshooting the problem, we first need to understand the interaction process between the front-end nginx and the back-end php. When the browser requests a URL, the request first goes to the front end n

2023-04-19 comment 0  1241