MOBILE OFFLINE FRAMEWORK FOR AZUREPaul Zhou

AGENDA

Background Is Mobile Offline Feature the Niche? Framework to support Mobile Offline Apps

MOBILE APP OFFLINE PATTERNS

RDB synchronization File synchronization Message Queue RPC

Mobile Device Server

Handheld Application

DB Sync Engine

Publications & Subscriptons

RDBMS

Small FootprintRDBMS

DB Sync Engine

RDB SYNC

FILE SYNC

MESSAGE QUEUE

RPC AND CACHING

OLD DAYS

No(Expensive) Cellular Data Expensive Mobile Devices Business Data Exchange Scenario

Work start in office : sync Do the work during the day without syncing Back to office: sync

Offline Patterns: RDB Sync and File Sync Windows Solution(Merge and SyncFramework),

Sybase Ultralite solution

THINGS HAVE CHANGED

Cheap Cellular Data Cheap Mobile Devices Business Data Exchange Scenario

Any time Offline Patterns:

REST, SOAP and Caching iOS device, Android Device

IS OFFLINE STILL RELEVANT?

Availability: Some areas, locations have no connection

Performance Unstable connection drags performance

Reliability Losing data is evil

HOW OFFLINE ARE OUR RECENT CUSTOMER PROJECTS?

CP: 100% ALC: 100% PK: 100% SIT: 70% TF: 10% OCT: 10% GI: 10% SSI 10% CAUBO 10% OCDSB 0%

EXAMPLE1- SHORT MESSAGE(GPS COORDINATE)

DB and synchronization Store GPS coordinates in a table and do

background sync File and Synchronization

Store GPS coordinates in a file and do background sync

Message Queue Put coordinates in a local queue

RFC(REST/SOAP) and Caching Send coordinates when connection available Cache when fails: file, dictionary, sqlite Send caches when connection available again

EXAMPLE2- BIG FILES(PHOTO)

DB and synchronization Store file in a table and do background sync

File and Synchronization Store file locally and do background sync

Message Queue Not applicable

RFC(REST/SOAP) and Caching Send file when connection available Store locally when fail Send file again when connection available

EXAMPLE3: RECENT PROJECTS CP/ALC/….(Windows Mobile)

DB Sync OCT (iPhone)

REST+JSON and SQLite caching GI

REST+JSON and SQLite caching PC

REST+JSON and SQLite and files SSI/CAUBO

SOAP+XML and Dictionary serialization ShiftIT

REST+JSON and SQLite caching Touch Fleet

REST+JSON

ODATA SYNC FOR RDB

ODATA SYNC FOR FILES

OFFLINE MESSAGE QUEUE