Creating airplane mode proof Xamarin applications
summary
Xamarin.Forms app uses an ASP.NET Core Azure backend to show an Avengers list, with image caching, offline reads and automatic refreshes. It uses Akavache for one-line get-and-fetch-latest caching that shows cached data immediately, Polly policies to retry (3 attempts with exponential backoff) and fallback/circuit-breaker logic, and Refit to remove HTTP boilerplate. Demo includes a backend endpoint that randomly returns HTTP 500 to prove retries work, ETag conditional requests to cut bandwidth, and Charles/HTTPscoop inspection.
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chapters (7)
- 0:00Start
- 6:38Network constraints
- 8:26The eight fallacies
- 8:58What Options Do We Have?
- 27:47Connectivity Plugin
- 35:58Implement Caching the Hard Way
- 59:16Take-aways
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