On 29.05.06 22:20, Domingos Parra Novo wrote: > I'm using a pool of (4) squid servers as a web accelerator for a slow > backend (vignette, to be more exact). Right now, almost everything works > like a charm, besides one thing. > If, for any reason (high load, for example), a purge request (for object > "foo") reaches servers 1, 2 and 3 (but haven't got the time to purge the > object on server 4), and a new request for the object "foo" arrives on > server 1 (which already expired this object), the request is redirected > from server 1 to server 4 (which contains an old version of the object). > In a few words, I sometimes get a invalid cache, with old objects on my > squid servers. does your backend web server provide correct expiry informations? Does it provide correct Cache-Control: headers? I think the main problem is that your caches provide old content, it has nothing to do with their ICP communication. > By the way, would htcp help me on this task? I know its "smarter" then > ICP, but I haven't seen much documentation about any of them, to tell you > the truth. I don't think so, however HTCP is not fully supported in squid and afaik it currently provides no more functionality than ICP. -- Matus UHLAR - fantomas, uhlar@xxxxxxxxxxx ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. Enter any 12-digit prime number to continue.
