ConSynk : Offline-first-sync-engine

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ConSynk : Offline-first-sync-engine

Handling Real-World Sync: Offline-First + Conflict Resolution
Most CRUD apps work fine…
until you open multiple tabs or the network drops for a moment.
Then come the real bugs:
• overwritten updates
• inconsistent UI across tabs
• “last write wins” data loss
So instead of firing an API request on every edit, I built a small client-side sync engine:
• Optimistic UI (instant feedback)
• Local persistence (works offline)
• Background retry queue
• Versioned writes → server returns 409 Conflict for stale updates
• Manual merge → Keep Server / Use Mine
Flow:
UI → Local Store → Sync Queue → Server Revision Check → Resolve → Consistent State

Repo Link : https://github.com/Phantom-TA/Consynk