mobile 1: mobile apps with mongodb

1. Building a Mobile App! Part 1 { name: Bryan Reinero, title: Developer Advocate, twitter: @blimpyacht, code: github.com/breinero email: [email protected] }

2. 2 Track Agenda Part 1: Architecture and Application Design Part 2: Geo-Spatial Indexing and Queries Part 3:Deployment Readiness

3. 3 Mobile Applications Location based data User relevance Context Rich Social Engagement

4. 4 The Scavenger Hunt App Users create scavenger hunts by pinning waypoints

5. 5 The Scavenger Hunt App Players search for a scavenger hunt near their current position

6. 6 The Scavenger Hunt App Basic Requirements

7. 7 The Scavenger Hunt App Basic Requirements Mark target points

8. 8 The Scavenger Hunt App Basic Requirements Mark target points Identify our users

9. 9 The Scavenger Hunt App Basic Requirements Mark target points Identify our users Mark users progress during hunts

10. Schema Design

11. 11 The Scavenger Hunt App Users create scavenger hunts by pinning waypoints

12. 12 Waypoint { _id: ObjectId(), user: UUID, tour: UUDI name: "Doug's Dogs", desc: "The best hot-dog", clues: [ "Hungry for a Coney Island?", "Ask for Dr. Frankenfurter", "Look for the hot dog stand" ], "geometry": { "type": "Point", "coordinates": [125.6, 10.1] } };

13. 13 Waypoint { _id: ObjectId(), user: UUID, tour: UUDI name: "Doug's Dogs", desc: "The best hot-dog", clues: [ "Hungry for a Coney Island?", "Ask for Dr. Frankenfurter", "Look for the hot dog stand" ], "geometry": { "type": "Point", "coordinates": [125.6, 10.1] } };

14. 14 Waypoint { _id: ObjectId(), user: UUID, tour: UUDI name: "Doug's Dogs", desc: "The best hot-dog", clues: [ "Hungry for a Coney Island?", "Ask for Dr. Frankenfurter", "Look for the hot dog stand" ], "geometry": { "type": "Point", "coordinates": [125.6, 10.1] } }; Geospacial Index: ensureIndex( { geometry: 2dsphere } )

15. 15 Waypoint Mobile Client

16. 16 Waypoint Application ServerMobile Client RESTful Service scavenger.com/waypoints?lat=40.87&lon=-73.87&max=100 HTTP GET

17. 17 Waypoint Application Server DatabaseMobile Client RESTful Service scavenger.com/waypoints?lat=40.87&lon=-73.87&max=100 HTTP GET

18. 18 Waypoint Application Server DatabaseMobile Client RESTful Service scavenger.com/waypoints?lat=40.87&lon=-73.87&max=100 HTTP GET Query { $geoNear: { $geometry: { type: "Point", coordinates: [ -174.9559, 40.6544 ] }, maxDistance: 100 }

19. 19 The Scavenger Hunt App Basic Requirements Mark target points Identify our users Mark users progress during hunts

20. 20 The Checkpoint Document { _id: ObjectId(), user: UUID, huntId: UUID, timestamp: ISODate(), geometry: { type: "Point", coordinates: [ long, lat ] } }

21. 21 The Scavenger Hunt App Social Requirements Allow users to follow one another Allow users to exchange messages Send users notifications

22. 22 Social Interactions Eratosthenes Democritus Hypatia Shemp Euripides

23. 23 User Collection { _id: UUID, name: Bryan Reinero, email: [email protected], pass: dontyouwishyouknew, description: I am just a guy, followers: [ Achille, Jason, Steffan, Norm ] }

24. 24 Social Interactions Followers Collection { follower: Shemp, followed: Euripides}, { follower:Shemp, followed: Eratosthenes}, { follower: Eratosthenes, followed: Shemp }, Eratosthenes Democritus Hypatia Shemp Euripides

25. 25 Social Interactions Eratosthenes Democritus Hypatia Shemp Euripides Followers Collection { follower: Shemp, followed: Euripides}, { follower:Shemp, followed: Eratosthenes}, { follower: Eratosthenes, followed: Shemp }, ! (Euripides -> Shemp )

26. 26 Social Interactions db.followers.find( { follower:Shemp } ); Followers Collection { follower: Shemp, followed: Euripides}, { follower:Shemp, followed: Eratosthenes}, { follower: Eratosthenes, followed: Shemp },

27. 27 Notifications / Messaging Message { sender: Hypatia, recipients: [ Democritus, Euripides, Eratosthenes ] date: ISODate(), message: truth is a point of view, and so is changeable }

28. 28 Notifications / Messaging Message { sender: Hypatia, recipients: [ Democritus, Euripides, Eratosthenes ] date: ISODate(), message: truth is a point of view, and so is changeable } db.messages.find( { recipients: Democritus} );

29. 29 OUTBOX OUTBOX OUTBOX OUTBOX OUTBOX OUTBOX OUTBOX OUTBOX OUTBOX Notifications / Messaging db.messages.find( outbox.user: Hypatia ); db.messages.find( outbox.user: Euripides); db.messages.find( outbox.user: Democritus); db.messages.find( outbox.user: Shemp); Read

33. 33 One Document per Message per Recipient { sender: Hypatia, recipient: Democritus, date: ISODate(), message: truth is a point of view, and so is changeable } { sender: Hypatia, recipient: Euripides, date: ISODate(), message: truth is a point of view, and so is changeable } { sender: Hypatia, recipient: Eratosthenes, date: ISODate(), message: truth is a point of view, and so is changeable }

34. 34 Inbox Buckets Hypatia Message Message Message Hypatia Message Message Message Hypatia Message Message Message

35. 35 Notifications / Messaging {user: Hypatia, ctime: ISODate(), mtime: ISODate(), count: 10, inbox: [ , , , ] }

mobile 1: mobile apps with mongodb

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