The squid is adding the max-age header but not the expires. So it cache them. I was looking at the methods that are available and I think I will just modify the code and add a hardcoded expires header ... and then compile the whole thing ... Alin Bugeag Tel +1 905 761 5301 ext 231 Home +1 416 623 9253 -----Original Message----- From: Ken Peng [mailto:kenpeng@xxxxxxxxxx] Sent: Tuesday, December 23, 2008 9:43 AM To: Alin Bugeag Cc: squid-users@xxxxxxxxxxxxxxx Subject: Re: expires header > Hi, > > > I have two imageservers behind a squid. > > My issue is that my imageservers are not sending any Expires headers but > I would like to attaché one from the squid. > > So by the time the image reaches the browser I have an Expires header in > it. > if there is neither Expires nor max-age headers, Squid won't cache them, is it? you may use apache's mod_expire to add that value, if you can control the realservers.