Web Crawlers Introduction Let's start from the very beginning: what exactly are web crawlers? Simply put, web crawlers, also known as spiders or bots, are automated programs that systematically browse the internet, collecting data from websites. They play a crucial role in indexing information for search engines like Google, enabling

Note: The following content uses MySQL version 8.0.24 and tables from the Sakila sample database. Introduction The Slow Query Log is a log used to record query statements that take a long time to execute in a MySQL database. In addition to recording DQL (Data Query Language), may