Cross-Platform Grocery Delivery: .NET MAUI Mobile Application

Enterprise Mobile Delivery Platform

.NET MAUI cross-platform application featuring real-time order management, multi-vendor integration, and intelligent pricing systems for grocery delivery services.

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Technical Architecture

Frontend Implementation

• .NET MAUI with XAML for cross-platform UI (Android/iOS)
• Custom renderers for platform-specific map and payment integrations
• MVVM pattern with data binding and command patterns
• Adaptive UI using FlexLayout and Grid systems

Backend Integration

• REST API consumption with HttpClient and JSON serialization
• Real-time location tracking using Google Maps API
• Push notifications via Firebase Cloud Messaging
• Payment gateway integration (Stripe/PayPal SDKs)

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Core Technical Features

Order Management System

• Shopping cart with real-time inventory synchronization
• Order status state machine with transaction rollback support
• Delivery time estimation using distance matrix algorithms

Price Optimization Engine

• Multi-store price comparison with caching mechanisms
• Discount calculation and coupon validation systems
• Loyalty program integration with point accumulation

Real-time Tracking

• GPS location updates with background service execution
• ETA calculation using road network data and traffic patterns
• Geofencing for automatic delivery confirmation

User Management

• JWT authentication with refresh token rotation
• Profile management with secure local storage
• Loyalty card digitization and barcode generation

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Technical Specifications

Platform: .NET MAUI, XAML, C#, REST APIs, SQLite

Key Algorithms:

• Dijkstra's algorithm for optimal delivery route calculation
• LRU caching for store catalog and pricing data
• Base64 encoding for loyalty card barcode generation
• Exponential backoff for network request retries

Performance Optimizations:

• Lazy loading for product images and catalog data
• SQLite database with index optimization for local caching
• Background service for periodic data synchronization
• Memory management through disposable pattern implementation