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Design Meeting 08 06 2013

Scott Smith edited this page · 3 revisions
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Agenda

  1. Discussion on notifications (publish-subscribe)

Take Aways

  • Control needed to be able to only notify a subscriber of an update in the topic IF the subscriber has permission to read the document that updated
    • Amazon SNS will NOT allow that level of control
    • PubSubHubbub will allow this if using a custom implementation of the protocol
  • Don't want to send actual content with notifications, just a notification message
    • PubSubHubbub will allow this if using a custom implementation of the protocol since most existing implementations want Atom or RSS content and will send updated portions of the content with notifications
  • Topics that can be subscribed to will not be document URLs, but search-based endpoints that are collections of documents:
    • Takedowns
    • Corrections
    • Updates?
  • Search will need a way to target documents that are associated with these topics
    • Just add an index field for the topic?
    • Also include the field in the document itself?
  • Custom notification server will need
    • to comply with PubSubHubbub protocol so that existing clients still work
    • an endpoint/URL where subcribers can subscribe/unsubscribe
    • a storage mechanism for keeping subscriber callback URLs for a topic
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