Re: Help
renato fringuello <[email protected]>
| Newsgroups | gmane.comp.audio.icecast.devel |
|---|---|
| Message-ID | <CAH2Z9sCYx_nMAL=kNfLomDsYZrCSdpD3xmTOi9fLSj8NqtPyvg@mail.gmail.com> |
Ok thanks a lot. 2012/9/27 Rücker Thomas <[email protected]>: > Hi, > > On 27/09/12 12:45, renato fringuello wrote: >> I took some radios from yp.xml 2 days ago, but today someone (like >> http://streaming207.radionomy.com/AngeFM) answers to me : >> "The file you requested could not be found" >> what's the problem? >> They doesn't exist anymore? They are off now and they could be on later? > > Yes, yp.xml is a snapshot of the streams that exist at the given time. > You should refresh your cached copy every now and then to be up to date. > As said previously don't do this too often. I'd guess if your cached > copy is older than e.g. 60min and the user does something that requires > the list, it should be safe to download a fresh copy. > > --------------- > > GENERAL WARNING (nothing personal): > As said before I'd like to avoid situations where we get some popular > software where each client will download the list every 5 minutes. > To give everyone reading this list an idea what this could mean: > - 500 copies active at a given time > - Polling every 5min > - XML size (compressed): 500 kByte / uncompressed: 5 MByte > - resulting bandwidth usage (compressed): 7 Megabit/s; uncompressed: 70 > Megabit/s > For just /one/ misbehaving software. > > For comparison the current average bandwidth of the /whole/ dir.xiph.org > server is 7Megabit/s (most of it due to uncompressed downloads) > > Now consider a well behaved software: > - 100000 copies active at a given time, install base in the millions. > - Updates only when it really needs the list (e.g. the user opens the > 'Internet streams' dialogue) > - When it needs the list it doesn't update more often than every e.g. 60min > - Uses RFC2616 compliant compression > 30 requests per hour, 400kbit/s effective bandwidth usage. > (Those numbers are actually educated guesses based on real usage > statistics of dir.xiph.org) > > Thanks for listening, > > Thomas > _______________________________________________ > Icecast-dev mailing list > [email protected] > http://lists.xiph.org/mailman/listinfo/icecast-dev