Hi, I have this object not being cached, and I can't understand why. http://download.cdn.mozilla.net/pub/mozilla.org/firefox/releases/22.0/update/win32/fr/firefox-22.0.complete.mar I have this cachedir set for objects of size > 128Ko : cache_dir aufs /var/cache/squid/W${process_number} 9000 16 256 min-size=131072 the headers of the object : HTTP/1.1 200 OK Last-Modified: Tue, 18 Jun 2013 15:38:37 GMT ETag: "dcfc8c-19e4648-4df6f81aff940" Server: Apache X-Backend-Server: ftp3.dmz.scl3.mozilla.com Content-Type: application/octet-stream Accept-Ranges: bytes Access-Control-Allow-Origin: * X-Cache-Info: caching Content-Length: 27149896 Cache-Control: max-age=266561 Expires: Sat, 06 Jul 2013 18:26:03 GMT Date: Wed, 03 Jul 2013 16:23:22 GMT the storedir is full, but I understand that since the object is requested very often, it should replace anotherone in the cachedir. (cache_replacement_policy heap LFUDA ) Do you have any hint on how to make sure th object gets cached? Thanks