Each time a visitor opens your site, the browser sends a request to the web server, which executes it and provides the desired data as a response. A standard HTML Internet site uses negligible resources due to the fact that it is static, but database-driven platforms are more requiring and use far more processing time. Every single webpage that's served creates two kinds of load - CPU load, which depends on the length of time the web server spends executing a certain script; and MySQL load, that depends on the total number of database queries created by the script while the client browses the site. Bigger load shall be produced if a considerable amount of people look through a given Internet site concurrently or if many database calls are made at the same time. Two 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 statistics about the load your site generates will help you optimize the content or see if it is the perfect time to switch to a more powerful kind of web hosting service, if the site is simply getting very popular.