Cloudant Sync Libraries for iOS and Android Dan DeMichele, VP Product! Mike Rhodes, Lead Mobile Engineer

Agenda • Cloudant Sync Overview ! • Cloudant Sync Technical Overview! • Roadmap! • Q&A

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Cloudant Highlights • Distributed Database as a Service (DBaaS)


• For developers of high-velocity web and mobile apps


• Ends drudgery of scale-it-yourself
 • 20,000+ users
 • Founded by big data scientists
 • Recently acquired by IBM Run Keeper

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Cloudant NoSQL DBaaS App Layer / Browser / Mobile App

REST (HTTPS)

Cloudant JSON API JSON CRUD

Incremental MapReduce

Lucene Search

2D, 3D Geospatial

MultiMaster Replication

Device Sync

Security

Monitoring

IO Control

Geo-Load Balancing

Indexed JSON Storage

Physical Storage @ IBM SoftLayer, Rackspace, Microsoft Azure, AWS 4

Why Cloudant Sync for iOS and Android? !

• Growing need for customers to develop native applications online and offline! • Android and iOS accounted for 93.8% of all smartphone shipments for the year [1]


• Need for a dead-simple, developer-friendly API to manage the storage of data on the device and server
 • Syncing of data needs to move between many devices for a collaborative experience! • 90% of people move between devices to accomplish a goal, whether that’s on smartphones, PCs, tablets or TV [2] [1] IDC Worldwide Quarterly Mobile Phone Tracker! [2] Navigating the new multi-screen world study: Google Research

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Store and Access Data Everywhere • Store and query data whether you’re online or offline! • Synchronize data between devices by replicating data from Cloudant or CouchDB!

Local
 Storage

• Simplify large scale development and deployment by isolating data access on the device and server! • Geographically disperse your data across 35 global data centers to allow for easy access depending on location

Local
 Storage

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Simplify and Distribute More Efficiently • Isolate data to an individual on the local device and server! • Reduce network activity by syncing only the data needed by a user to their device! • Easily share data across devices based on user access! • Sync directly with Cloudant or CouchDB - No need for extra servers to manage sync between devices 7

Key Feature Highlights • Open source libraries for both Android and iOS! • API for the mobile developer, removing as much backend complexity as possible! • Creating, reading, updating, and deleting documents (CRUD)! • Full replication support for local device to Cloudant or CouchDB ! • Querying and indexing of the data on the local device! • Complements other MBaaS solutions such as Parse and Kinney! • Robust conflict resolution

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Sync Use Case Scenarios Many use cases across industries and verticals. The most interesting ones all have to do with either offline access or syncing across multiple devices:! • Retail and POS! • Providing real time inventory information across stores and regions with frequently interrupted service! • Field Services! • Data querying and data input in remote areas or spotty service! • Trade Shows / Conferences! • Updates to the conference or sharing of data while moving from zone to zone with interrupted service 9

Architecture

Outline • Native code implementation in two languages: • Objective-C: iOS and OS X • Java: Android and other Java platforms !

• Reuses existing open-source code and platforms

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Indexing

Overview • A more "search-like" API !

• Chosen to go this way because: • Speaking to app developers, more immediately useful • Experience with our own applications !

• Demonstrates how to use various library features to build an "extension" on the platform: changes feed, events…

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Docs @{
 },

@"country": @"Zambia", 
 @"area": @(752614)

!

@{
 }

@"country": @"Zimbabwe", 
 @"area": @(390580)

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Creating an index // Datastore is CouchDB database — pool // of JSON documents CDTDatastore *datastore = …;
 // Standard alloc/init using datastore
 CDTIndexManager *im = …; !




[im ensureIndexedWithIndexName:@"country" fieldName:@"country" error:&error]; 16

Querying NSDictionary *query; CDTQueryResult *result; !

query = @{@"country": @"Zambia"}; ! !

result =[im queryWithDictionary:q error:&error]; ! !

for (CDTDocumentRevision *rev in result) { NSLog(@"", rev.docId); } 17

Other queries !

@{ // Exact equality
 @"country": @"Zambia", !

// One of
 @"country": @[@"Zambia", @"Zimbabwe"], !

// >=
 @"area": @{@"min": @(100000)}, !

//