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Hisham Idris
Hisham Idris

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The Offline-First Struggle: How I Built a Robust Sync Engine for Flutter (SynapseLink)

Introduction: Building a robust offline-first application is more than just caching data; it's about managing consistency. After struggling with manual sync logic in complex ERP-style apps, I decided to build a standard solution.

Meet SynapseLink v1.0.3: An Enterprise-Grade Offline Sync Engine that bridges the gap between Hive and Dio.

Key Technical Insights:

Intelligent Batching: Groups multiple offline actions into a single API request upon reconnection to save battery and server resources.

Auth-Aware Engine: Automatically pauses the sync queue when a 401 error occurs and resumes once the token is refreshed.

Deep Merge Resolution: A logic-heavy conflict resolver that ensures the most recent nested data is preserved.

Get Involved: The project is fully Open Source and I’d love to hear your feedback on the architecture.

📦 Pub.dev: https://pub.dev/packages/synapse_link

🚀 GitHub: https://github.com/wisamidis/synapse-links

💬 Discord: Connect with me at Vortex Shadow.

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