This module covers client-side system architecture, UI layout rendering, hardware-backed memory management, push notification networks, and offline data consistency.
- Offline-First Synchronization: SQLite Single Source of Truth, delta changesets, optimistic UI updates, outbox queues, and Jitter-backed backoff retries.
- UI Rendering Pipelines: Flutter's three-tree architecture vs. Android measure/layout draw loops and iOS CoreAnimation commit cycles.
- List Pagination Systems: Viewport-aware scroll prefetching thresholds, cell recycling, and Offset vs. Cursor-based pagination.
- Image Caching & Memory math: Decoded bitmap memory arithmetic, RAM/Disk cache tiers (L1 & L2), downsampling, and GC pressure mitigation.
- Real-Time Video Streaming: WebRTC P2P streaming, SDP session negotiations, STUN/TURN NAT traversal, and hardware rendering context.
- Push Notification Delivery: Silent data push executions, OS notification service extensions, and secure hardware-key decrypt loops.
- Real-Time Chat Client: Duplex WebSockets vs. gRPC bidirectional streams, cursor reconciliation, and optimistic outbox queue states.
- Background Execution Constraints: OS background execution constraints (battery, charger connectivity, network unmetered limits) mapped to Android WorkManager and iOS BackgroundTasks.