I like lightspeed but the free version is crippled and only usable for smallish sites. The real version costs a lot of money but is pretty nice. But it not being open source makes me personally cringe ;)
Lightspeed is nice for smaller sites because the processes can go away when there is no traffic. But I'm not a fan of it much and it's not covered in the book.
Lightspeed is nice for smaller sites because the processes can go away when there is no traffic. But I'm not a fan of it much and it's not covered in the book.