Since 6.5.1.a-2013100302, trafficserver ready to test.
Different with varnish, trafficserver use hd space + ram combination for cache with 'default rule' where 1GB hd cache will be use 1MB RAM cache.
By default, Kloxo-MR set cache as '256MB' HD space.
Importance file inside '/etc/trafficserver':
1. storage.config - for setting hd space for cache
2. remap.config - for mapping proxy; Kloxo-MR implementing 'simple' regex_remap
3. records.config - basic configure like port, ip and etcetera
By default, trafficserver listen port 80 (also 443) and web server (apache or others listen port 8080).
At this moment, trafficserver still using 3.2.5 (latest version of 3). Version 4.0.1 already exist but I have a problem to compile to Centos 5 (no problem with Centos 6). Epel repo have version 3.0.4 for Centos 6. As I know, no 'major' repo have trafficserver (especially for Centos 5).