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What CRDT databases do you use in this sort of application?
by rkangel 9y ago
What CRDT databases do you use in this sort of application?
- elcritch 9y agoCurrently leveraging CouchDB and it's incremental map-reduce to handle the "CRDT" merging of an event stream. Technically I'm not using a CRDT library or DB, but it's surprisingly easy to implement the core "commutative operations" of CRDT's via a modified deep-merge versioning algorithm. Works pretty well as I can deploy 20,000+ user interactions on an embedded CouchDB instance with steady performance. Interesting to note that while the actual data structures don't conflict the oder that multiple users modify data and choosing an ordering (and choosing) of which user events poses a challenge. It's possible with CouchDB DB merging to notify the user's interface that their changes were overwritten by another user or device allowing them to choose.