The Apache web server can use up a pretty large chunk of RAM. The last thing you need in a high traffic situation is to start swapping. One way to avoid swapping is to make sure Apache is utilizing the smallest amount of memory possible. One quick and easy way to accomplish this is to stop loading unnecessary modules.

Throughout the first several chapters of this book, you were exposed to numerous simple rewrite examples. Some of them were actually useful, while others existed purely to introduce concepts. This chapter takes a practical turn, in that the examples offered actually solve real-world problems. While not all of these will be directly applicable to you, working through the examples and their explanations will nonetheless provide you with a better understanding of what’s involved in crafting rewrite solutions to problems that you experience on your own website.

So, someone has decided to do a performance test between Apache and Yaws. Simply put, this is absolutely worthless. Yes, Yaws performs much better under high load. Is there any surprise there? The greatness of Apache is not in its ability to perform stellar under high loads. It is in its versatility.