People seem to be pushing all of this as a way to sell CDNs, but surely it can be just done with apache. If browsers can only download 8 files at a time from website.com, why cant I just setup 2 random subdomains that point to the same location and randomly serve images from these subdomains instead of the same domain? For example
Under the hood, both are pointing the same file on the same server in the same folder, but it will let me parallelize the downloads without having to spend any money. What is the downside to doing this, because it seems to make perfect sense to me?
If pointing the subdomains at the same server could cripple apache or something, why cant I instead rent a second server, install apache here, store all my images on this server and point a few different subdomains at this server. I can then outsource image serving and use 5 different subdomains if i wish. Its not a CDN of course, but it seems like a cheap way to achieve faster page loading without the complication of messing with CNAMEs and CDN providors.