Final Reflection
The first phase of Syncraft is complete. From concept to working client SDK, the journey revealed several key insights about local-first data synchronization.
Local-First is Different
The biggest learning: local-first architecture is fundamentally different from client-server. The data lives on the device first. Cloud sync is optional—a convenience, not a requirement. This changes everything: storage, conflict resolution, encryption scope, and user expectations.
Event Sourcing Fits Sync
Event sourcing was the right choice for change tracking. The change log becomes the audit trail, nested field diffs minimize conflicts, and snapshots enable efficient bootstrapping. This foundation supports future features like fine-grained access control and collaborative editing.
Multi-Backend Convergence
The pull-all, merge, push-all pattern works. It handles new backends, offline backends, and multiple accounts with the same simple logic. The key insight: after sync, all backends converge to the same state.
What’s Next
The client SDK is functional. The next phase involves:
- Gateway encryption (encrypt on push, decrypt on pull)
- Tag-based filtering per backend
- Custom API RBAC integration
- WebRTC for direct peer sync
Syncraft demonstrates that local-first data synchronization doesn’t require complex distributed systems theory. By focusing on simple, composable patterns—event sourcing, LWW conflict resolution, multi-backend convergence— the SDK provides a solid foundation for personal applications that need to work offline and sync when possible.