develop: data management, sync and security – couchbase connect 2016

©2016 Couchbase Inc. 1

Develop: Data Management, Sync, and

Security


Jim BordenSoftware [email protected]@borrrden

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mailto:[email protected]


James NocentiniTechnical [email protected]@jamiltz

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mailto:[email protected]

©2016 Couchbase Inc. 4©2016 Couchbase Inc.

Agenda

• Couchbase Lite• Local Database• With Synchronization• Conflict Resolution• Supported Platforms

• Sync Gateway• Sync Function

• Integration• App Servers

• Peer-to-peer• Different Topologies


Couchbase LiteThe Database


Couchbase Lite Development

C#Objective-C / SwiftJava

+ others

Hybrid

Native

Native with JS


Creating a Database

• A database is simply a collection of documents• Server-less architecture; All logic is embedded in the

application


Document Operations

// Get the database (and create it if it doesn't exist)let database = CBLManager.sharedInstance().databaseNamed("user1")

// Create a new document (i.e. a recordlet document = database.createDocument()document.putProperties(["task": "Apples"])

// Update a documentdocument.update { (newRevision) -> Bool in newRevision["task"] = "Red apples" return true}

// Delete a documentdocument.delete()


Pre-built Database


Creating an Index


Data Aggregation


Couchbase LiteSyncing


Starting Replications


Conflict Resolution

• Mobile data will have conflicts (CAP theorem)• Application logic dictates how they are handled• Common strategies• Deletes always win• N-way merge• Last update wins


Example: N-way merge

Type = TaskName = TextComplete = false

Type = TaskName = Text ChangedComplete = false

Type = TaskName = PotatoesComplete = true

Type = TaskName = Text ChangedComplete = true


Sync GatewaySync Function


Security Model

• Data routing• Channels

• Read access• Access method

• Write access• requireUser• requireAccess• requireRole


Channels

Channels

Users

ch 1

ch 2

User 1

User 2

ch 1Documents

ch 3Roles

Role 1

Role 2

Doc 1

Doc 2

Doc 3

Role 2

ch 2

ch 3

ch 1 ch 1 ch 2

ch 2

ch 3

...

...

... ...

1

1

3

2

1

1 3


IntegrationWith Other Systems


Flexible REST APIs

• Stream changes• Bulk operations• HTTP clients in different languages


Peer-to-peer

• Connect and exchange data directly• Different topologies• Same application code


Demo Topology

Sync Gateway

Windows AppAndroid App

LAN Network


Thank You!