The document discusses building offline web applications. It provides two case studies, including a stock ordering system for a supermarket built with Java and Oracle on tablets, and a travelling product tester app built with Chrome, JavaScript for offline caching. It also covers using local storage, app caching, and setting up a file system to store files locally and upload/download to a server.
31. Set up file system
+ request quota
Store file
locally
Update
image tag
Store file
locally
Upload
image
Download file
from server
Download
image
Upload file to
server
Update
image tag
<img
src="filesystem:http://192.168.50.4/
persistent/3ebc23e1-‐10bf-‐5b60-‐440.jpg">
32. 50% of current disk space
available to browser
20% of that is the maximum
available to a single web app
34. Potential for data conflicts?
Size of data?
Sensitive data?
OR ?
Which browsers required?
Structure of data?
Amount of functionality to work offline?