Best way to tell is see if it's a TCP_HIT or a TCP_MISS in the log, whether it gets cached or not. If they are all MISS's, perhaps you need additional configurations to cache those objects, which I am not an expert of to provide you with. >>> Pelit Mamani <Pelit.Mamani@xxxxxxxxxxxxxx> 2/17/2011 9:12 AM >>> Hi, I have a large video file (50 MB). Obviously when a client first requests it - then Squid will load it from our CMS (content) server, and cache (we have maximum_object_size > 50MB). My question is, what should happen if *several* clients ask for the file, concurrently, for the first time? If I have 4 such clients - would Squid download 4X50=200MB from the CMS? Or would it be smart enough to recognize the existence of identical concurrent requests, and download only once (50 MB)? Or is it configurable? Thanks. Travel Impressions made the following annotations ------------------------------------------------------------- "This message and any attachments are solely for the intended recipient and may contain confidential or privileged information. If you are not the intended recipient, any disclosure, copying, use, or distribution of the information included in this message and any attachments is prohibited. If you have received this communication in error, please notify us by reply e-mail and immediately and permanently delete this message and any attachments. Thank you."