Flutter and Dart Developer

Gursewak Singh

Gursewak Singh builds Flutter apps and Dart packages at Boffin Coders, including durable_queue, the open-source queue on pub.dev that keeps uploads and form sends from being lost when the signal drops. Gursewak Singh writes about offline-first apps and mobile work that survives bad networks.

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Posts by Gursewak Singh

1 post published under this byline, newest first.

Flutter offline-first uploads: one photo upload stored on the phone, waiting with no signal, retried after a 503 with backoff of 1, 2 and 4 seconds, recovered after the app was killed, and received

Mobile App DevelopmentRead Now

Gursewak Singh

Oct 28, 2026

12 min

Flutter Offline-First Uploads: Retries, Backoff and Recovery

Flutter offline-first uploads that survive no signal, server errors and crashes: retries with backoff, network gates and recovery, with code and benchmarks.

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