Milestones

Messaging

• Milestone A: Listener / Sender Interfaces
• Milestone B: Support in-process via django signals
• Milestone C: Direct exchange type with named queues
• Milestone D: Prioritized queues
• Milestone E: Testing scenarios

Notifications

• Milestone 1: End-to-end prototype of architecture
  • User Story: Given that I created a Forums Post, as the author of the post, when someone responds to my post, I get an email.
  • Stub Messaging - within single process
  • Notifications Message interface
  • Composer implementation in Forums
  • Delivery: Easiest - Browser or Email?
  • (User Targeting & Presentation & Policy steps are No-Ops)
• Milestone 2: Scaling User Targeting (depends on multi-process)
  
  • User Story: As a developer/devOps, when notifications messages are sent through the pipeline, I can track each message with the amount of time each message spends in each pipeline step.
    • Update History table in the message object at each step
    • Logging
  • User Story: As a follower of the post, when someone responds to the post, I get an email.
  • User Targeting step
  • Messaging - across multiple processes
  • Scaling: Demonstrate horizontal scaling - linearly with parallelism
• Milestone 3: Template Rendering
  
  • User Story: As a follower of the post, when someone responds to the post, I get an email with the author's name and a deep link to the post.
  • Template repository with the Composer
  • Presentation Step - Template resolution
• Milestone 4: Message Localization and Personalization
  
  • User Story: As a post follower with French language settings, when someone responds to the post, I get an email in French with my name in the greeting.
  • Scaling: per-user localization and personlization of the message
• Milestone 5: User and Platform Policy
  • User Story: As a follower of the post, when someone responds to the post, I do not get an email if I have disabled notifications, but others may.
• Milestone 10: Notifications Tray - in-app desktop

Later

• Read/Unread
• Aggregation
• TTL, Priority, Durability