Perhaps it's not fair to say the *hub* is sensitive to small changes, but
that some publishers may be more update-happy than others.

On Thu, Nov 12, 2009 at 8:25 PM, Ravi Pinjala <[email protected]> wrote:

>
> Most likely this is the same issue I ran into a few weeks ago. First,
> PubSubHubbub only sends the changes to a feed, not the whole feed, so you
> would only see a few updates at a time. Second, the hub is sensitive to even
> small changes such as the number of comments on a story if the feed contains
> that information, so it may seem like it's giving a lot of duplicate updates
> for a few items.
>
> --Ravi
>
>
> Waleed wrote:
>
>> I'm testing out Google hub by subscribing to the TechCrunch feed,
>> which does list "pubsubhubbub.appspot.com" as it's hub. I'm seeing
>> something odd about the notifications I'm getting. There are missing
>> articles, and a couple old articles are being sent again and again.
>> Here is a list of the notifications I received listing the post titles
>> in each one:
>>
>>
>> 11-12 04:38PM:   (first notification from the hub)
>> title = "Facebook VP Leaves A Lover Letter For Apple",
>> title = "Incsub Launches WP Plugins; App Store For WordPress
>> Plugins",
>> title = "Reddit Opens Its Homepage To Anyone Willing To Pay
>> (Invites)",
>>
>> 11-12 04:44PM:
>> title = "Myxer Delivers 10 Million Ringtones To iPhone Users",
>> title = "Incsub Launches WP Plugins; App Store For WordPress
>> Plugins",
>> title = "Reddit Opens Its Homepage To Anyone Willing To Pay
>> (Invites)",
>>
>> 11-12 04:54PM:
>> title = "Facebook VP Leaves A Love Letter For Apple",
>> title = "Incsub Launches WP Plugins; App Store For WordPress
>> Plugins",
>> title = "Reddit Opens Its Homepage To Anyone Willing To Pay
>> (Invites)",
>>
>> 11-12 05:01PM:
>> title = "Incsub Launches WP Plugins; App Store For WordPress
>> Plugins",
>> title = "Reddit Opens Its Homepage To Anyone Willing To Pay
>> (Invites)",
>>
>>
>> In comparison, here is the list of titles as I see them when I view
>> the feed at (http://feeds.feedburner.com/TechCrunch)
>>
>> Facebook VP Leaves A Love Letter For Apple
>> The ScamVille Lawsuit: Facebook, MySpace, Zynga And More Face Possible
>> Class Action Suit
>> Should Nintendo Fear The Apple Juggernaut?
>> Pingdom Says People Are Tweeting 27 Million Times A Day
>> Google Announces Acquisition of Gizmo5. They Now Have A Soft Phone For
>> Google Voice
>> Forbes Media Acquires Digital Photo Magazine FlipGloss
>> Flickr Outsources Printing To Snapfish
>> First Rule Of Facebook Connect: You Do Talk About Fight Club
>> MySpace Hires Some Social Smarts From LinkedIn
>> For Charity: Foursquare Looking For Leaderboard Sponsors
>> Crazy ComScore Charts: LinkedIn Shoots Up Past Twitter
>> Vitamin D Turns Your Webcam Into A Virtual Doorman
>> SPDY Gonzales: Google Continues Its Push To Take The Web To Breakneck
>> Speeds
>> Trouble At Twitter: U.S. Visitors Down 8 Percent In October
>> Twitter, Facebook Come To Xbox 360 On Nov. 17
>> Video: Hands-on With the Chumby One
>> YouTube Succumbs To Branding As Warner Music Begins Its Return
>> No Need To Wrap Your Blog Post In A Tweet, Just Sync It With MySpace
>> That $1.25 Billion Settlement With AMD?  It’s About 12 Days Of Revenue
>> For Intel.
>> Google Wave Declutters The Inbox With Following Feature
>> Video: Fox News Takes On Violent Video Games. Again.
>> Cleaning House Before Its IPO Will Cost AOL $200 Million And Up To
>> 1,000 Jobs
>> Reddit Opens Its Homepage To Anyone Willing To Pay (Invites)
>> Incsub Launches WP Plugins; App Store For WordPress Plugins
>> SpotiChart Picks Up Spotify Tweets, Charts Music Trends On The Fly
>>
>>
>>
>>    You'll notice that the hub keeps sending two of the old posts with
>> every notification, while skipping some of the new posts. Am I doing
>> something wrong?
>>
>> Thanks,
>> Waleed
>>
>>
>>
>>
>
>


-- 
Jeff Lindsay
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