On Sat, 2018-11-17 at 14:43 -0600, Chris Adams wrote: > Once upon a time, Jonathan Dieter <jdie...@gmail.com> said: > > The benefit of zchunked rpms is that, when downloading an updated rpm, > > you would only need to download the chunks that have changed from > > what's on your system. > > How well do web servers and caches handle range requests? I haven't > really paid attention to range requests in a long time; at one point > IIRC mirrors would often disable them because of "download accelerators" > that would open multiple connections to download parts of the same ISO > in parallel (hogging server resources).
When I did the original POC testing, out of Fedora's 150 mirrors, 3 didn't support range requests at all and 3 supported a limited number of ranges in a single http request. Zchunk doesn't open extra connections to the server, but instead combines as many ranges as the server supports into a single request. Currently, if a server doesn't support ranges, zchunk will just download the full file, but this could be changed to try a different server. Jonathan _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
