Offline Syncing in Ionic 2 with PouchDB & CouchDB



By Josh Morony 

Since I started travelling around Australia I’ve tried to keep things pretty minimal. I got rid of all the clothes I didn’t need, shoes, kitchen ware, furniture, cleaning products and so on. Basically, I tried to get rid of everything I didn’t need… yet I still have 2 iPhones, an iPad, 3 Android phones, a Mac and a PC.

To be fair, I’m a mobile developer, so although I probably don’t need these they certainly make my life easier. Other people might not have that many devices, but I think it would be pretty rare to find someone who just has a single “smart” device. So if you’re building an app that only stores data locally on one device, you might be causing issues for a user who would like to use your app on their iPhone and their iPad.

The solution is to store the data remotely on a server somewhere, which will allow the user to access the data from any device. However, this introduces a new problem: not everybody is connected to the Internet all the time (I should know, I’m writing this from the middle of the Australian outback). So we’re going to tackle two issues:

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