When connection basiafusinska.com barbarafusinska.com Going offline on mobile

About basiafusinska.com barbarafusinska.com

Agenda Why & when What How – Data sync patterns – Full offline experience – Local data sync – Conflicts

WHY DO WE EVEN NEED OFFLINE?

UX PATTERNS FOR OFFLINE APPS

DON’T LOSE LOCAL DATA…

DON’T TREAT OFFLINE LIKE AN ERROR…

DON’T SCARE THE USER…

COMMUNICATE…

DON’T LIE…

Atwood’s Law Any application that can be written in JavaScript, will eventually be written in JavaScript

HOW TO BUILD FULL OFFLINE EXPERIENCE?

Cache Retrieving data from a new source Local copy

Local database How much data do you need?

OFFLINE IS NOT A PROBLEM

OFFLINE PATTERNS cache, deferred updating, local database sync

BACKGROUND CACHING

PROBLEMS

DEFERRED UPDATING

CACHED UPDATES

PROBLEMS

PROS & CONSS

LOCAL DATABASE SYNC

FULL OFFLINE EXPERIENCE

VERSIONING & MIGRATION

PROBLEMS

DATA SYNC

Syncing technologies

INCREMENTAL SYNC

GET /endpoint/{timestamp}

POST /enpoint {data}

HOW TO GATHER INCREMENTAL DATA?

SERVER SIDE

LOCAL SIDE

Sequential changes Created & updated Created & deleted Updated & deleted

RELATIONS

RESOLVING RELATIONS

CONFLICTS

Sync new/created data No conflicts … unless relations

DELETE

UPDATES

Summary Full offline experience Data sync Conflict resolution

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