Go real time with pubsubhubbub and feeds

Realtime with PuSH and Feeds Alex Barth 25. aug 9:00 Acquia Tuesday, August 24, 2010

Development Seed Managing News Tuesday, August 24, 2010

Are we there yet? http://www.ﬂickr.com/photos/geraldbrazell/4562022876/ Tuesday, August 24, 2010

Are we there yet? Are we there yet? Are we there yet? Are we there yet? Are we there yet? rss.xml Publisher Subscriber Yes. Here you are. Are we there yet? Tuesday, August 24, 2010

Ask developmentseed.org every 30 minutes for a new blog post, you’ll download 11 MB for about 9K blog posts a week. Tuesday, August 24, 2010

Do that for 100 similar blogs and you’ll download 1G of data a week just for polling. Tuesday, August 24, 2010

What’s worse: Polling many feeds will back up. http://www.ﬂickr.com/photos/geraldbrazell/4562022876/ Tuesday, August 24, 2010

Publish and Subscribe http://www.ﬂickr.com/photos/geraldbrazell/4562022876/ Tuesday, August 24, 2010

Notiﬁcation Publisher Subscriber Tuesday, August 24, 2010

PubSubHubbub is a Publish and Subscribe standard Tuesday, August 24, 2010

It solves two problems Tuesday, August 24, 2010

Problem 1: Tons of notiﬁcations Subscriber Subscriber Subscriber Subscriber Subscriber Publisher Subscriber Subscriber Subscriber Subscriber Tuesday, August 24, 2010 Subscriber

Problem 1: Tons of notiﬁcations Subscriber Solution: Use a Hub Subscriber Subscriber Subscriber Subscriber Publisher Hub Subscriber Subscriber Subscriber Subscriber Tuesday, August 24, 2010 Subscriber

Problem 2: The thundering herd Subscriber Subscriber Subscriber Subscriber Subscriber Publisher Subscriber Subscriber Subscriber Subscriber Tuesday, August 24, 2010 Subscriber

Problem 2: The thundering herd Solution: Send what’s changed (fat ping). Hub Subscriber nges Cha Tuesday, August 24, 2010

And what about RSS Cloud? Tuesday, August 24, 2010

PubSubHubbub is a speciﬁcation Tuesday, August 24, 2010

It’s all HTTP and XML. Tuesday, August 24, 2010

Tuesday, August 24, 2010

1. Subscriber POSTs subscription request to the Hub. The request contains the endpoint URL where the Hub should POST new updates. I want to subscribe to feed X, send updates to this URL: Publisher Hub Subscriber From http://code.google.com/p/pubsubhubbub/ Tuesday, August 24, 2010

2. Hub POSTs to the endpoint URL to verify the request was authentic; Subscriber responds with conﬁrmation to the Hub. Hey there! Did you really send this request? Publisher Hub Subscriber Yup, that was really me, not a DoS attacker. From http://code.google.com/p/pubsubhubbub/ Tuesday, August 24, 2010

3. Publisher notiﬁes Hub about updates by POSTing feed URLs to the Hub; Hub pulls the feed again to ﬁnd new entries. I have new content for feed X for you! Publisher Hub Subscriber Give me your latest Here you go. content for feed X, please. From http://code.google.com/p/pubsubhubbub/ Tuesday, August 24, 2010

4. When Hub receives new update to feed X, it POSTs the update to the Subscriber’s endpoint URL. New update to feed X - here you go: Publisher Hub Subscriber From http://code.google.com/p/pubsubhubbub/ Tuesday, August 24, 2010

5. If feed X has multiple subscribers, the Hub sends updates to all of them. This reduces load on the Publisher. New update to feed X - here you go: Subscriber Publisher Hub Subscriber Subscriber Subscriber Subscriber Tuesday, August 24, 2010 Subscriber From http://code.google.com/p/pubsubhubbub/

Questions? Tuesday, August 24, 2010

Who supports it? Tuesday, August 24, 2010

Wordpress Tuesday, August 24, 2010

Feedburner Tuesday, August 24, 2010

Blogger (Google, right?) Tuesday, August 24, 2010

Reference Hub Tuesday, August 24, 2010

Hub: Superfeedr Tuesday, August 24, 2010

Drupal as subscriber: Feeds Tuesday, August 24, 2010

Drupal as publisher: 404 Tuesday, August 24, 2010

Check out Views content cache Tuesday, August 24, 2010

Drupal as hub: PuSH Hub (onboard hub) Tuesday, August 24, 2010

Demo time Tuesday, August 24, 2010

function pusher_menu() { $items = array(); $items['realtime.xml'] = array( 'title' => 'Realtime RSS feed', 'page callback' => 'pusher_feed_page', 'access arguments' => array('access content'), 'type' => MENU_CALLBACK, ); return $items; } function pusher_feed_page() { drupal_set_header( 'Content-Type: application/rss+xml; charset=utf-8'); print pusher_feed(); } Tuesday, August 24, 2010

David Weinberger: “Small pieces loosely joined” Tuesday, August 24, 2010

PuSHing users Tuesday, August 24, 2010

Mapping content between sites Tuesday, August 24, 2010

Check out • PubSubHubbub spec • Feeds module (PuSHSubscriber.inc) • PuSH Hub module (PuSHHub.inc) Tuesday, August 24, 2010

What’s next? • Solidify Subscriber support • Implement Publisher support • Solidify content mapping standards • Security: PuSH + OAuth • Content type independence Tuesday, August 24, 2010

Thank you. Questions? Tuesday, August 24, 2010

http://cph2010.drupal.org/node/15363 Tuesday, August 24, 2010

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Go real time with pubsubhubbub and feeds

by Development Seed on Aug 24, 2010

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Go real time with pubsubhubbub and feeds — Presentation Transcript