1) Parse provides a backend as a service that allows developers to easily add features like push notifications, user authentication, file storage, and a database to mobile apps. 2) It offers an easy to use SDK for iOS and Android apps to connect to the Parse backend and manage data through a REST API or local SDK methods. 3) Parse's free tier supports basic usage, while paid plans provide more storage, requests, and features like scheduling and analytics for $199/month or less depending on usage.

1. CocoaHeads Paris
Jeudi 14 novembre 2013
Nicolas Lauquin

2. « Parse is the easiest way to get a backend up
and running for your mobile application »

3. Overview
Easy backend building & nice web interface
Push
Analytics
Social & authentification (Facebook connect, Twitter connect)
Mail
Hosting & Cloud code extension
InApp Purchase
Multi-plateforme SDK (iOS, OSX, Android, Unity…)
REST

4. Backend 1/3
Powerful Data Management
Data creation through Relational database or KVC

5. Backend 2/3
Advanced filtering

6. Backend 3/3
ACL (Classe level & Object level)
Data type :
String
Number
Boolean
Array
Object
Date
Bytes
File
Geoloc

7. Push 1/2
Easy integration through the SDK
Almost free
Segmenting
Filtering by plateform
Schedule (Pro)
Accessible through REST API

8. Push 2/2

9. Parse iOS SDK

10. Installation
Add « Parse.framework" to your project
Add lib dependancies
Add : [Parse
setApplicationId:@"YOUR_APP_KEY"
clientKey:@"YOUR_CLIENT_KEY"];

11. Model 1/3
PFObject class
Saving objects
Saving Objects Offline

12. Model 2/3
Retrieving objects exemple
Arrays

13. Model 3/3
Delete
Counter
PFUser or PFRole, PFProduct
You manipulate object extending PFObject
Relationnal Data
one To Many (@"parent")
Many to Many (PFRelation object)

14. Queries 1/2
Powerfull query system

15. Queries 2/2
queries with NSPredicates
containsAllObjectsInArray/notContainedIn
greatherThan/LessThan/lessThanOrEqualTo…
relationnal queries
limit x result or skip x result
ordering on multiple keys
compound Queries : orQueryWithSubqueries

16. Caching
query.cachePolicy property
6 caches configuration, including:
kPFCachePolicyCacheElseNetwork:
The query first tries to load from the cache, but if that fails, it loads results from the network.
If neither cache nor network succeed, there is a PFError.
kPFCachePolicyCacheThenNetwork:
The query first loads from the cache, then loads from the network. In this case, the callback
will actually be called twice - first with the cached results, then with the network results.
Since it returns two results at different times, this cache policy cannot be used
synchronously with findObjects.

17. File
PFFile class
saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error)
progressBlock:^(int percentDone)
getDataInBackgroundWithBlock:^(BOOL succeeded, NSError *error)
progressBlock:^(int percentDone)

18. Geopoints
PFGeoPoint class
[PFGeoPoint geoPointWithLatitude:37.7 longitude:-122.5];
Helpers:
geoPointWithLocation:(CLLocation)
geoPointForCurrentLocationInBackground:^(PFGeoPoint
*geoPoint, NSError *error);
Geo Queries:
[query whereKey:@"location" nearGeoPoint:userGeoPoint];
whereKey:nearGeoPoint:withinKilometers

19. Social & sign-in
Easy authentication with :
Facebook based on FB SDK
Twitter
Login/pwd
Helpers & feature on PFUser

20. User interface
Parse provides a few subclasses of UIViewController that make logging in/
signing up PFUsers, and displaying PFObjects significantly easier.

21. User interface 1/3
PFLogInViewController & PFSignUpViewController

22. User interface 2/3
PFQueryTableViewController
Pagination with a cell that can be tapped to
load the next page.
Pull-to-refresh table view header.
Loading screen
Offline message support
PFTableViewCell for image listing

23. User interface 3/3
PFImageView
Cachine image in memory & disk

24. Pricing & performances
Basic plan - free
Pro plan - 199$/month
1 million request/month + 7¢ per 1,000 over
15 million request/month + 5¢ per 1,000 over
1 million pushes/month + 7¢ per 1,000 over
5 million pushes/month + 5¢ per 1,000 over
20 request/second
40 request/second
1gb + 20¢ per 1GB over
10gb + 15¢ per 1GB over
Custom domain name & mail branding
Push mutliple certificate, push targeting, schedulin
More app&push metrics
Collaborators
+1 background jobs

25. Pricing & performances
Transparent pricing
For which kind of project & company size ?
Bought by Facebook in april 2013
Your data are free

26. Learn more
Much more to explore
Cloud Code & beforeSave/afterSave
Cloud Code modules (ParseImage, SendGrid,
Underscore…)
Rest API
Background job
Great documentation
Check tutorials https://www.parse.com/tutorials

28. CocoaHeads Paris
parse.com
Nicolas Lauquin
@nlauquin
nicolas@atelierdumobile.com
www.atelierdumobile.com