Clear in the iCloud
Milen Dzhumerov (via Drew McCormack):
There has been a lot of talk about iCloud + CoreData (referred to as iCCD hereafter) over the past few months and I think it is a good time for me to share our journey in getting iCloud integrated in Clear. If you do not want to read through all the details: Clear uses a custom system built on top of iCloud File Storage and it works in a similar fashion to Operational Transformation. The post proceeds to cover the reasons for choosing iCloud, then explores iCCD and subsequently builds a synchronisation system from the ground up.
This is a good strategy, although iCloud file storage also has some issues. It’s important to note that both iCloud Core Data and and Operational Transformation involve syncing sets of changes, but they work at different levels of abstraction. Core Data syncs lower level database transactions, while OT works with higher-level user-oriented actions.
