Surviving Network Failures: Building Resilient Offline-First…
summary
Concrete blueprint for offline-first Flutter apps: use local storage as the source of truth (SQLite/Hive/Isar/ObjectBox), implement an outbox and sync engine with client-generated IDs and idempotent PUTs, batch pushes/pulls and use delta sync, apply exponential backoff with jitter and WorkManager/OS background constraints, and resolve conflicts with last-write-or per-field merging or CRDTs. A field data collection app rebuilt this way sees a nearly 40% task completion uplift, fewer support calls, and durable offline UX.
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chapters (24)
- 0:00Offline-first resilience intro
- 1:48Network failures are normal
- 3:34Common app failure patterns
- 5:41Resilient offline-first traits
- 6:45Offline-first blueprint pillars
- 8:10Resilient design principles
- 9:18Local-first design foundation
- 10:44Choosing local storage
- 11:49Repository abstraction
- 12:33Outbox and sync engine
- 13:17Sync triggers and patterns
- 14:21Server-side sync contracts
- 15:26Conflict resolution strategies
- 16:55Practical conflict resolution
- 18:00Background sync constraints
- 19:47Retry and circuit breakers
- 20:51User experience for offline-first apps
- 22:15Testing offline in production
- 23:00Security and data handling
- 24:27Implementation roadmap
- 26:17Rural data collection case
- 28:46Common pitfalls and fixes
- 30:53Recap and checklist
- 32:42Q&A
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