Hi, I would like to know a little more about how Squid works in detail, especially the data structures and algorithms it used to chunk and hold large files. I found the Squid Programmers Guide at http://old.squid-cache.org/Doc/Prog-Guide/, which seems to be a good starting point for me to better understand the system. I noticed the guide was written in 2004, so I wonder if there exists an updated version? Thank you in advance, Henry