Course Intermediate  3463

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  12765

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 Intermediate  8085

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 Advanced  45171

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  11360

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.

Course Introduction：In the process of using Win11, some friends found that the computer startup speed has become slower, which greatly affects the use of the computer. So what should I do if Win11 starts slowly? Today, the editor will bring you a solution to the slow startup of Win11. Friends in need can come and take a look! 1. Click Start in the taskbar below and select "Settings" in the menu list to open. 2. After entering the new window interface, click the "Apply" option. 3. Then click the "Start" option in the left column, find the useless service on the right, and turn off its switch button.

2024-09-02 comment 0  831

Course Introduction：mysql服务启动不了解决方案

2016-06-01 comment 0  1019

Course Introduction：This article introduces the solution to the problem that the Tomcat service starts very slowly, and focuses on the specific steps. The content of this article is compact, and I hope everyone can gain something.

2018-09-28 comment 0  4799

Course Introduction：Recently, some users have reported that when they were using their computers, they encountered the problem that although the boot speed of Win11 was very fast, the restart of Win11 was very slow. This is actually because the boot function has a quick startup function, but the restart function does not. Solutions to the slow restart of win11: 1. First of all, the fast boot speed is due to the system’s built-in quick startup function. 2. It will automatically back up files when the computer is shut down and read them when the computer is turned on to quickly start the computer. 3. This function is not available when restarting the computer, causing the restart speed to be slower than booting. 4. Therefore, solving the slow restart speed is the same as improving the boot speed. 5. We only need to open "Settings" through the start menu 6. Then enter "Applications" in the left column 7. Then open the "Startup" settings in the application. 8. Finally in

2024-01-05 comment 0  1631

Course Introduction：Many users still use the edge browser in the new win11 system, but many encounter problems when using it. Most of them are compatibility issues, so the following is a win11 edge browser. The solution cannot be opened, come and see how to solve it. What to do if Win11 starts slowly: 1. First, right-click "Start" on the "Taskbar", click "Settings" in the pop-up menu, and open Win11 "Settings". 2. After entering the setting interface, click the "Start" option. 3. Find the useless service in the startup application list and close it, then turn off the switch on the right. 4. Finally, you can restart the computer again to see if the startup speed becomes faster.

2023-12-27 comment 0  1126