Each time a visitor opens your Internet site, the web browser sends a request to the web server, which executes it and supplies the desired information as a response. A simple HTML website uses negligible resources because it's static, but database-driven platforms are more requiring and use a lot more processing time. Each page that is served generates two types of load - CPU load, that depends on the amount of time the hosting server spends executing a particular script; and MySQL load, which depends on the total number of database queries generated by the script while the end user browses the Internet site. Higher load will be generated if loads of people browse a certain Internet site simultaneously or if a lot of database calls are made at the same time. 2 illustrations are a discussion board with a huge number of users or an online store where a client enters a term in a search box and thousands of items are searched. Having comprehensive stats about the load which your Internet site generates will allow you to optimize the content or see if it is time for you to switch to a more powerful kind of hosting service, if the website is simply getting really popular.