Data is stored in a graph format, currently (unfortunately) as just JSON. There are storage adapters to backup to S3, Level, SQLite, etc. Here is an article on the JSON graph structure: https://github.com/amark/gun/wiki/GUN%E2%80%99s-Data-Format-...
Sync is done using a deterministic AP (of the CAP Theorem) conflict resolution algorithm. Specifically, a hybrid vector-lexical-timestamp CRDT. An article on how it works is here: https://github.com/amark/gun/wiki/Conflict-Resolution-with-G...
And the tradeoffs are discussed here: https://github.com/amark/gun/wiki/CAP-Theorem
Custom protocol, our docs aren't up to date on it though. But it is designed to work over WebSockets, HTTP, TCP, UDP, WebRTC, etc.
Data is stored in a graph format, currently (unfortunately) as just JSON. There are storage adapters to backup to S3, Level, SQLite, etc. Here is an article on the JSON graph structure: https://github.com/amark/gun/wiki/GUN%E2%80%99s-Data-Format-...
Sync is done using a deterministic AP (of the CAP Theorem) conflict resolution algorithm. Specifically, a hybrid vector-lexical-timestamp CRDT. An article on how it works is here: https://github.com/amark/gun/wiki/Conflict-Resolution-with-G...
And the tradeoffs are discussed here: https://github.com/amark/gun/wiki/CAP-Theorem
Custom protocol, our docs aren't up to date on it though. But it is designed to work over WebSockets, HTTP, TCP, UDP, WebRTC, etc.