On Wed, Apr 9, 2014 at 5:00 PM, Julien Genestoux <[email protected] > wrote:
> John, you should make that original feed PubsubHubbub first if you want > feedburner to propagate the updates too. > +1. Here's how FeedBurner works. Definition: source feed is a feed that publisher hosts. http://jmillerinc.com/newsyc100.xml is a source feed. Definition: burned feed is a feed that FeedBurner hosts. http://feeds.feedburner.com/newsyc100 is a burned feed corresponding to http://jmillerinc.com/newsyc100.xml. When a burned feed is requested from FeedBurner (usually by an RSS reader), it checks the age of the cached source feed. If it never downloaded the source feed or it's too old, FeedBurner downloads the source feed. Then FeedBurner serves the requested burned feed, which is essentially a transformed source feed (the set of transformations is specified by the owner of the burned feed in the FeedBurner UI). I believe by default FeedBurner will download the source feed if it's older than 30 minutes, but don't quote me on that. All burned feeds support PubSubHubbub with https://pubsubhubbub.appspot.com/as the hub end-point, regardless of the source feed. Whenever the burned feed changes (that happens when FeedBurner detects changes in the source feed), it notifies https://pubsubhubbub.appspot.com/, which in turns notifies all subscribers of the burned feed. If the source feed supports PubSubHubbub (it can be any hub, no necessarily https://pubsubhubbub.appspot.com/), FeedBurner subscribes to changes. When the publisher notifies its hub about changes to the source feed, FeedBurner receives those notifications from the hub and instantly recomputes the burned feed. Summary: 1. If the source feed doesn't support PubSubHubbub, the burned feed will be up to 30 minutes behind the source feed. 2. If the source feed does support PubSubHubbub, the burned feed will always be up to date and FeedBurner will not have to poll it. HTH, Roman. > > > > -- > > *Got a blog? Make following it simple: https://www.subtome.com/ > <https://www.subtome.com/>* > > Julien Genestoux, > http://twitter.com/julien51 > > +1 (415) 830 6574 > +33 (0)9 70 44 76 29 > > > On Tue, Apr 8, 2014 at 8:30 AM, John Huffaker <[email protected]> wrote: > >> Thanks for looking into it! >> >> If it helps, the primary feed is: >> http://jmillerinc.com/newsyc100.xml >> >> On Monday, April 7, 2014 1:41:56 AM UTC-7, Roman Perepelitsa wrote: >> >>> Hi John, >>> >>> On Mon, Apr 7, 2014 at 9:23 AM, Julien Genestoux >>> <[email protected]>wrote: >>> >>>> John, >>>> >>>> The order of items does not create problem that I know of with most >>>> hubs. Diffing for RSS/Atom should be done using <guid>/<id> and hence the >>>> publication time/order should not matter. This is what Superfeedr does with >>>> the hubs it hosts, I'll let Roman explain exatcly how Google does its >>>> diffs. >>>> >>> >>> It's the same with Google hub: the order of items doesn't matter. >>> >>> Now, I Fedburner cannot ping the hub itself if it is not pinged itself >>>> about an update. So, it would probably be useful to know if the "burnt" >>>> feed itself uses pubSubHubbub. >>>> >>> >>> I have verified that the hub is receiving pings for this feed from >>> Feedburner every 6 hours. Let me find out what happens within Feedburner. >>> I'll get back to you. >>> >>> Roman. >>> >>> >>>> >>>> Thanks, >>>> >>>> >>>> >>>> >>>> >>>> -- >>>> >>>> *Got a blog? Make following it simple: https://www.subtome.com/ >>>> <https://www.subtome.com/> * >>>> >>>> Julien Genestoux, >>>> http://twitter.com/julien51 >>>> >>>> +1 (415) 830 6574 >>>> +33 (0)9 70 44 76 29 >>>> >>>> >>>> On Sun, Apr 6, 2014 at 10:10 PM, John Huffaker <[email protected]>wrote: >>>> >>>>> Hi All, >>>>> >>>>> I use an RSS feed for ycombinator that only posts stories that stories >>>>> that reach 100 points (described here: http://talkfast.org/2010 >>>>> /07/23/a-cure-for-hacker-news-overload/). I used to get a fairly >>>>> snappy steady stream of posts throughout the day but I've noticed in the >>>>> past month or so that it would tend to burst in every 6 hours or so. I >>>>> talked to my RSS reader place (theoldreader) and they said that they rely >>>>> on pubsubhubbub for feeds that support it and do full refreshes on a much >>>>> slower cycle. They also mentioned that the order in which the items are >>>>> coming (oldest first, newest last) may be causing problems for >>>>> pubsubhubbub. All of my searching around made me think that you guys do a >>>>> plain diff and should be fine with order differences. I'm not 100% sure >>>>> what is happening with this feed. I've attached the pubsubhubbub status >>>>> page image and the feedburner output at a snapshot in time. Any help you >>>>> guys can give me would be very welcome. >>>>> >>>>> PS: I'm in contact with both the RSS reader people and the feed author >>>>> so I can get more info if needed. >>>>> >>>>> Regards, >>>>> John Huffaker >>>>> >>>>> -- >>>>> >>>>> --- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Pubsubhubbub" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to [email protected]. >>>>> >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> -- >>>> >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "Pubsubhubbub" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> -- >> >> --- >> You received this message because you are subscribed to the Google Groups >> "Pubsubhubbub" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > > -- > > --- > You received this message because you are subscribed to the Google Groups > "Pubsubhubbub" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- --- You received this message because you are subscribed to the Google Groups "Pubsubhubbub" group. 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