Lazy remote service access – REST and IndexedDB

Visiting the Goto Conference in Berlin let me code a quick hack of a personal conference planner GotoCo . GotoCo is a small mobile application based on web technologies using the Ionic framework. It features to access the conference information, store them locally for later use and build your personal conference schedule. Visit http://apps.mindcrime-ilab.de/gotoco/index.html to check out the app – but due to the conference is already over it might not that useful anymore.

Conference sessions and tracks become more or less fixed after some point and network usage is always critical on mobile devices (limited speed or transfer volume). Applying a cache mechanims seems appropriate in order to make the app more responsive and mobile friendly.
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IMHO: Lessons learned from WhatsApp

Building an open alternative to the propriety WhatsApp messenger would be a desirable option. And indeed there are lots of open (e.g. beem, yaxim,…) as well as non-free competitors but none of those could supersede it, although there were some reports about security problems and account hijacking. So what might be a key feature to bring the open alternatives to a broader audience?
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