Course Intermediate  8372

Course Introduction：Many programmers who have worked for many years still have a very basic understanding of databases. They are confused as soon as they go out for interviews. They don’t understand basic SQL statements, more complex SQL queries, and SQL statement optimization. They don’t even know how to use them. Redis improves system performance and can withstand tens of millions of concurrencies. This set of courses will help you thoroughly understand MySQL locks, execution plans, indexes, MVCC & Redis transactions, cache, breakdown, penetration, avalanche, warm-up, etc., and you can complete all database interviews in one set!

Course Elementary  7831

Course Introduction：HTTP communicates based on B/S architecture, and the server-side implementation programs of HTTP include httpd, nginx, etc. The client-side implementation programs are mainly web browsers, such as Firefox, Google Chrome, Safari, etc. In addition, the client's command line Tools include elink, curl, etc. Web services are based on TCP, so in order to respond to client requests at any time, the Web server needs to listen on port 80/TCP. In this way, the client browser and the web server can communicate through HTTP.

Course Intermediate  4138

Course Introduction：Tomcat is a Servlet container developed by the Jakarta project under the Apache Software Foundation. According to the technical specifications provided by Sun Microsystems, it implements support for Servlets and JavaServer Page (JSP), and provides some unique functions as a Web server, such as Tomcat Management and control platform, security bureau management and Tomcat valve, etc.

Course Introduction：PHP heap sort implementation principle and application method, PHP heap sort implementation principle. PHP heap sorting implementation principle and application method, PHP heap sorting implementation principle. This article describes the PHP heap sorting implementation principle and application method through examples. Share it with everyone for your reference. The specific analysis is as follows:

2016-07-13 comment 0  807

Course Introduction：PHP heap sorting implementation principle and application method. PHP heap sorting implementation principles and application methods This article mainly introduces PHP heap sorting implementation principles and application methods, and analyzes the principles and usage techniques of heap sorting in more detail, which has certain reference

2016-07-13 comment 0  783

Course Introduction：Principles and Applications of Linux Pipes In Linux systems, pipes are a very powerful and commonly used concept that allow the output of one command to be used as the input of another command, thereby achieving data transmission and collaboration between commands. The use of pipelines can greatly improve the flexibility and efficiency between commands, providing convenience for system management and data processing. 1. Principle of Pipeline In Linux, a pipeline creates a temporary file descriptor so that the output of one process is consistent with the input of another process.

2024-02-24 comment 0  1031

Course Introduction：Principles and Applications of PHP Regular Expressions Regular expressions are a powerful and flexible text pattern matching tool that can be used to retrieve and replace text that matches a certain pattern. As a popular server-side scripting language, PHP also provides powerful regular expression support. This article will introduce the principles and applications of PHP regular expressions, and illustrate its use through specific code examples. Principle: In PHP, regular expressions mainly consist of two parts: patterns and modifiers. The pattern is a string describing the matching rules, and the modifier is

2024-03-20 comment 0  819

Course Introduction：:This article mainly introduces the PHP version - HTTP session cookie principle and application. Students who are interested in PHP tutorials can refer to it.

2016-07-30 comment 0  1075