Hey Kalv, On Thu, Oct 8, 2009 at 9:42 AM, Kalv <[email protected]> wrote: > First off love the protocol! > > I'm working with twitterfeed in London, to implement pubsubhubbub as > one of the ways to get updates happening in realtime (well almost).
Very cool! > In development we have implemented subscribing the topic with the > relevant hub and for some we are getting notifications coming through. > But i'm having some issues and would like to voice them and see if > anyone has any advice: > > - We keep on getting multiple notifications from the > pubsubhubbub.appspot.com hub, comparing the md5 of the notification > they do seem to be the same, for now we do a duplicate check before > processing any further. Is this normal behaviour? We do get normal > duplicates, that are different, which are probably updates to the > article. What is your average latency of handling delivery? The reference hub will only wait 5 seconds before giving up on subscribers, after which point it will retry. This is most likely what you are seeing. If you can change your subscriber to work asynchronously, that would be ideal. I'm still figuring out if making the deadline 10 seconds would be worth-while. > - I thought that blogspot had implemented Pubsubhubbub (http:// > buzz.blogger.com/2009/08/blogger-joins-hubbub.html), but by creating a > test blog I didn't see any hub declaration in an atom/rss feed, anyone > know why this is so? Are they doing something different or just not > implemented fully? It's implemented for Atom feeds on Blogger; we have not yet turned it on for the RSS feeds (because the code paths are different). What's the test blog you're trying this with? > - I'm finding it hard to debug subscriptions with TypePad, we set up a > blog there and subscribed, is there a way to confirm that the > subscription was successful? The hub sends the challenge as a http get > to the callback and we send that back, but we don't get new post > notifications - maybe this of topic here and could be a problem on > their end. Do you have a similar test blog on TypePad to test with? What's the URL? Just thinking I could help debug if I had more data. If you got the verification request, then the subscription should be live. -Brett
