BLE App Design Patterns
summary
An Android smart‑lock app uses Bluetooth Low Energy and the RxAndroidBLE library, splitting data into 19‑byte chunks with sequence bytes to work around the 20‑byte MTU and reassembling on the other side. It adds an HTTPS‑like cryptographic layer because the lock has no display, keeps device firmware minimal while the server holds mutable metadata, isolates BLE code in a module with a test app for verification, and designs idempotent APIs for eventual consistency; these patterns are used in production.
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chapters (14)
- 0:00Introduction
- 1:12BLE features and uses
- 3:25Why use BLE and smart locks
- 5:39BLE vs web communication
- 8:01BLE security design
- 10:18Device and server data
- 12:52Sync delays and consistency
- 17:21Idempotent APIs and consistency
- 19:15App architecture basics
- 21:03Domain-based endpoints
- 24:07Dedicated BLE app
- 25:16Simple UI and MVVM
- 28:43Design summary and trials
- 29:46BLE app development future
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