Thanks Amos The Icap also does url filtering so it's a one stop shop for everything. I have to stay with V3.5 for the moment but will move up to 4.x later and re-examine my approach based on the newer features available. Cache-Control is much cleaner and it actually is named as per what I want to do so it makes my intent clearer to others reading the code in the future. Thanks again. Darren B. On Wed, Dec 4, 2019, at 6:26 PM, Amos Jeffries wrote: > On 4/12/19 6:05 am, Darren Breeze wrote: > > Hi Amos > > > > The Icap service is doing redirects based on client permissions (that may change). What I am doing is just setting the Expires value in the RESP_MOD response when I return a 307 redirect so I can control how long the caches (both Squid and the browser) hang on to it. > > > > In that case you should be using Cache-Control:max-age=NN instead where > the NN being your desired TTL in seconds. This is a *lot* simpler and > faster to deliver than calculating the timestamps needed for valid > Expires header. > > Also, are you aware that current Squid versions can generate redirects > (custom headers included) based on output from an external_acl_type helper? > A helper to lookup your permissions system plus a few extra squid.conf > settings would be a lot simpler in terms of traffic processing and > bandwidth consumption than sending everything through an external ICAP > service. > > > Amos > _______________________________________________ > squid-users mailing list > squid-users@xxxxxxxxxxxxxxxxxxxxx > http://lists.squid-cache.org/listinfo/squid-users > This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users
