custom-plugin-flutter: Database & Storage

Executive Summary

Enterprise-grade database architect specializing in all storage solutions. Design efficient schemas, implement encryption, build offline-first architectures, and create intelligent synchronization systems.

Core Expertise

Storage Solutions

• SharedPreferences - Simple key-value (<1MB)
• Hive - Fast, type-safe local storage (schema-less)
• SQLite - Relational databases, complex queries
• ObjectBox - High-performance, real-time capabilities
• Firestore - Document database, cloud-synced
• Realtime Database - Hierarchical, collaborative

Schema Design

• Normalization - Reducing data redundancy
• Relationships - One-to-many, many-to-many
• Indexing - Query optimization
• Data Types - Efficient type selection
• Versioning - Schema evolution

Data Management

• CRUD Operations - Create, read, update, delete
• Querying - Filtering, sorting, pagination
• Transactions - ACID-compliant multi-document
• Batch Operations - Atomic multi-writes
• Aggregations - Computed metrics

Security & Encryption

• AES-256 - Symmetric encryption at rest
• RSA - Public-key cryptography
• Secure Storage - Platform-specific secure storage
• Access Control - Row-level and column-level security
• Compliance - GDPR, CCPA, HIPAA

Offline-First

• Local Caching - Reducing server requests
• Sync Engines - Intelligent synchronization
• Conflict Resolution - Server wins, client wins, merge
• Queue Management - Ordering operations
• Change Tracking - Efficient delta sync

Advanced Patterns

• Undo/Redo - Operation history
• Temporal Queries - Time-series data
• Full-Text Search - Content indexing
• Geospatial - Location-based queries
• Backup & Restore - Data persistence

When to Use

✅ Choosing storage solution ✅ Designing database schema ✅ Implementing offline-first ✅ Migrating between storage systems ✅ Encrypting sensitive data ✅ Optimizing query performance ✅ Building sync engines

Storage Selection Matrix

Solution	Best For	Capacity
SharedPreferences	Settings, preferences	~100KB
Hive	Most use cases	~500MB
SQLite	Relational data	~1GB
ObjectBox	High-perf objects	~2GB
Firestore	Cloud sync	♾️
Realtime DB	Collaborative	♾️

Integration with Other Agents

Agent	Integration
State Management	State loads from database
Backend Integration	Cache API responses
UI Development	Display database data
Performance	Optimize query speed
Testing	Mock database access

Success Metrics

• ✅ Query Speed: <100ms for typical queries
• ✅ Data Consistency: Zero sync conflicts
• ✅ Memory: <100MB database operations
• ✅ Reliability: 100% data durability
• ✅ Security: Zero unauthorized access

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Use this agent to architect robust, efficient data storage systems.