The following URL is not getting into my squid cache no matter what I do :( http://download.macromedia.com/get/flashplayer/current/licensing/win/install_flash_player_11_plugin.exe wget -d http://download.macromedia.com/get/flashplayer/current/licensing/win/install_flash_player_11_plugin.exe DEBUG output created by Wget 1.13.4 on linux-gnu. URI encoding = `UTF-8' URI encoding = `UTF-8' --2013-04-05 23:35:40-- http://download.macromedia.com/get/flashplayer/current/licensing/win/install_flash_player_11_plugin.exe Connecting to 127.0.0.1:3128... connected. Created socket 3. Releasing 0x0000000000c09110 (new refcount 0). Deleting unused 0x0000000000c09110. ---request begin--- GET http://download.macromedia.com/get/flashplayer/current/licensing/win/install_flash_player_11_plugin.exe HTTP/1.1 User-Agent: Wget/1.13.4 (linux-gnu) Accept: */* Host: download.macromedia.com Connection: Close Proxy-Connection: Keep-Alive ---request end--- Proxy request sent, awaiting response... ---response begin--- HTTP/1.1 200 OK Server: Apache Last-Modified: Thu, 07 Mar 2013 07:42:56 GMT ETag: "7a680e-fb90d8-4d750dadb4000" Accept-Ranges: bytes Content-Length: 16486616 Content-Type: application/octet-stream Date: Fri, 05 Apr 2013 20:35:58 GMT X-Cache: MISS from snono-systems Via: 1.1 snono-systems (squid/3.2.9) Connection: keep-alive ---response end--- 200 OK Registered socket 3 for persistent reuse. Length: 16486616 (16M) [application/octet-stream] Saving to: `install_flash_player_11_plugin.exe' 100%[===================================================================================================>] 16,486,616 295K/s in 52s 2013-04-05 23:36:32 (308 KB/s) - `install_flash_player_11_plugin.exe' saved [16486616/16486616] Downloading the file again returns another MISS ! my refresh pattern starts with : #general refresh_pattern \.(jp(e?g|e|2)|tiff?|bmp|gif|png) 92560 9999% 130240 reload-into-ims override-expire ignore-private ignore-no-store refresh_pattern \.(z(ip|[0-9]{2})|r(ar|[0-9]{2})|jar|bz2|gz|tar|rpm|vpu) 12560 99% 30240 override-expire reload-into-ims ignore-private refresh_pattern \.(mp3|wav|og(g|a)|flac|midi?|rm|aac|wma|mka|ape) 12560 99% 30240 override-expire reload-into-ims ignore-reload ignore-private refresh_pattern \.(exe|msi|dmg|bin|xpi|iso|swf|mar|psf|cab|ipk|ipa|apk) 92560 9999% 130240 override-expire ignore-reload ignore-private ignore-no-store refresh_pattern \.(mpeg|ra?m|avi|mp(g|e|4)|mov|divx|asf|wmv|m\dv|rv|vob|asx|ogm|flv|3gp|on2) 12560 99% 30240 ignore-reload override-expire reload-into-ims ignore-private my cache_dirs : cache_dir aufs /mnt/cachedisk1/cache/store1 200000 32 512 <= 90% free cache_dir aufs /mnt/cachedisk2/cache/store1 200000 32 512 <= 90% free my squid.conf has the following : http_port 3128 http_port 3129 intercept snmp_port 3401 snmp_access allow localhost qos_flows tos qos_flows local-hit=0x30 maximum_object_size_in_memory 512 KB memory_cache_mode always memory_replacement_policy heap GDSF cache_replacement_policy heap LFUDA store_dir_select_algorithm round-robin max_open_disk_fds 0 maximum_object_size 209715200 bytes access_log stdio:/var/log/squid3/access.log # access_log none cache_log /var/log/squid3/cache.log cache_store_log none logfile_rotate 1 minimum_expiry_time 120 seconds request_header_max_size 64 KB reply_header_max_size 64 KB request_body_max_size 0 KB client_request_buffer_max_size 512 KB cache_effective_user proxy cache_effective_group proxy visible_hostname snono-systems fqdncache_size 4096 pipeline_prefetch on max_filedescriptors 50000