On Thu, Aug 28, 2014 at 10:41 AM, Leif Hedstrom <zw...@apache.org> wrote:
> > On Aug 28, 2014, at 11:35 AM, Bill Zeng <billzeng2...@gmail.com> wrote: > > > Just to throw another idea your way. We can insert another level of > indirection between URL's and objects. Every object has a unique hash. > URL's point to the hashes instead of objects. The hashes are used to look > up objects. Even if multiple URL's are duplicated and hence their hashes, > they always point to the same object. It seems a non-easy project though. > It requires major changes to ATS. > > > I’m not sure I understand this, or how it helps this problem? However, > isn’t this sort of how the cache already works? There’s a hash from URL to > the “header” entry, which then has its own hash to the actual object. Alan? > Maybe I did not understand it correctly. Currently, ATS calculates a hash from a URL and uses the hash to look up the actual object. That is "URL --> actual object". My idea is to "URL --> hash of an object --> actual object". We calculate the hash of a URL and use that to look up the hash of an actual object and then use the hash of the actual object to look up the actual object. > — leif > >
