Hello all, I'm beginning to implement a Squid setup and am in
particular looking to cache Youtube as it is a significant chunk of our
traffic and we don't want to outright block it (yet).
I'm using squid-2.6.STABLE6 from RHEL 5.1 (latest errata). I've been
reading around a lot and am seeking a bit of clarification on the
current status of caching youtue and potentially other streaming media.
Specifically:
* Adrian mentions support for Youtube caching in 2.7 -- which seems
to correspond with this changeset:
http://www.squid-cache.org/Versions/v2/2.7/changesets/11905.patch
Which would seem to be only a configuration file change. Is there
any reason Youtube caching won't work correctly in my 2.6 version
with a similar setup (and the rewriting script as well I guess)?
* If there are additional changes to 2.7 codebase that make youtube
caching possible, are they insignificant enough that they could
easily be backported to 2.6? I'm trying to decide how I will
convince Red Hat to incorporate this as I doubt they'll want to
move to 2.7. Alternate of course is to build from source which I
am open to.
My config file is as follows:
http_port 3128
append_domain .esri.com
acl apache rep_header Server ^Apache
broken_vary_encoding allow apache
maximum_object_size 4194240 KB
maximum_object_size_in_memory 1024 KB
access_log /var/log/squid/access.log squid
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320
acl all src 0.0.0.0/0.0.0.0
acl esri src 10.0.0.0/255.0.0.0
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl to_localhost dst 127.0.0.0/8
acl SSL_ports port 443
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl CONNECT method CONNECT
# Some Youtube ACL's
acl youtube dstdomain .youtube.com .googlevideo.com .video.google.com .video.google.com.au
acl youtubeip dst 74.125.15.0/24 64.15.0.0/16
cache allow youtube
cache allow youtubeip
cache allow esri
http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost
http_access allow esri
http_access deny all
http_reply_access allow all
icp_access allow all
coredump_dir /var/spool/squid
# YouTube options.
refresh_pattern -i \.flv$ 10080 90% 999999 ignore-no-cache override-expire ignore-private
quick_abort_min -1 KB
# This will block other streaming media. Maybe we don't want this, but using
# it for now.
hierarchy_stoplist cgi-bin ?
acl QUERY urlpath_regex cgi-bin \?
cache deny QUERY
I see logfile entries (and cached objects) that indicate my youtube
videos are being saved to disk. However they are never "HIT" even when
the same server is used. I wonder if the refresh_pattern needs to be
updated? The GET requests for the video do not have a .flv in their
filename.... What does refresh_pattern search for a match? The request
URL? The resulting MIME type?
That's it for now. :) Thanks in advance.
Ray
