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flutter-db

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Atualizado31 de março de 2026 às 12:41

Local database and persistence selection for Flutter including SharedPreferences, SecureStorage, Hive, and Drift. Use when implementing offline storage, encrypted data persistence, or choosing between key-value and relational local databases.

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Poorgramer-Zack

Poorgramer-Zack/dart-expert-skills

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Ocupações relacionadasSOC

Baseado na classificação ocupacional SOC

Desenvolvedores de softwareInformática e Matemática·SOC 15-1252

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SKILL.md

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name	flutter-db
description	Local database and persistence selection for Flutter including SharedPreferences, SecureStorage, Hive, and Drift. Use when implementing offline storage, encrypted data persistence, or choosing between key-value and relational local databases.
metadata	{"last_modified":"2026-03-12 11:18:17 (GMT+8)"}

Database Architecture Guide (Flutter)

Goal

Implement robust, scalable, and secure local persistence strategies for Flutter applications. This skill ensures developers choose the optimal storage engine—balancing simple key-value settings, encrypted sensitive data, high-performance NoSQL object stores, and complex relational databases.

Process

🚀 High-Level Workflow

Selecting the right persistence layer depends on data sensitivity, complexity, and relationship depth.

Phase 1: Key-Value Persistence (Simple & Secure)

Use lightweight stores for settings and sensitive credentials.

Shared Preferences Guide - Non-sensitive settings and flags using static wrappers.
Secure Storage Guide - Encrypted storage for tokens and passwords.

Phase 2: High-Performance Object Storage (NoSQL)

For local-first apps requiring fast read/write of large datasets without complex relations.

Hive CE (Synchronous NoSQL) - Blazing fast object store for local caching and offline data.

Phase 3: Complex Relational Schemas (SQL)

For apps requiring strict data integrity, transactions, and complex queries.

Drift (Reactive SQL) - Type-safe relational database built on top of SQLite.

📚 Documentation Library

Refer to these specialized resources to implement your chosen persistence strategy:

Constraints

Type Safety: Prohibit raw dynamic data access. Always use generated classes (Drift) or typed static wrappers (SharedPreferences/SecureStorage).
Sensitivity Awareness: Force use of Secure Storage for any tokens, passwords, or PII. Never store sensitive data in SharedPreferences or unencrypted Hive boxes.
Singleton Access: Access storage instances via DI (Riverpod) or strictly defined static classes to prevent key fragmentation.
Performance Balance: Use NoSQL (Hive) for high-frequency reads and SQL (Drift) for complex relationships. Don't over-engineer simple apps with SQL.

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name	flutter-db
description	Local database and persistence selection for Flutter including SharedPreferences, SecureStorage, Hive, and Drift. Use when implementing offline storage, encrypted data persistence, or choosing between key-value and relational local databases.
metadata	{"last_modified":"2026-03-12 11:18:17 (GMT+8)"}

Database Architecture Guide (Flutter)

Goal

Process

🚀 High-Level Workflow

Selecting the right persistence layer depends on data sensitivity, complexity, and relationship depth.

Phase 1: Key-Value Persistence (Simple & Secure)

Use lightweight stores for settings and sensitive credentials.

Shared Preferences Guide - Non-sensitive settings and flags using static wrappers.
Secure Storage Guide - Encrypted storage for tokens and passwords.

Phase 2: High-Performance Object Storage (NoSQL)

For local-first apps requiring fast read/write of large datasets without complex relations.

Hive CE (Synchronous NoSQL) - Blazing fast object store for local caching and offline data.

Phase 3: Complex Relational Schemas (SQL)

For apps requiring strict data integrity, transactions, and complex queries.

Drift (Reactive SQL) - Type-safe relational database built on top of SQLite.

📚 Documentation Library

Refer to these specialized resources to implement your chosen persistence strategy:

Constraints

Type Safety: Prohibit raw dynamic data access. Always use generated classes (Drift) or typed static wrappers (SharedPreferences/SecureStorage).
Sensitivity Awareness: Force use of Secure Storage for any tokens, passwords, or PII. Never store sensitive data in SharedPreferences or unencrypted Hive boxes.
Singleton Access: Access storage instances via DI (Riverpod) or strictly defined static classes to prevent key fragmentation.
Performance Balance: Use NoSQL (Hive) for high-frequency reads and SQL (Drift) for complex relationships. Don't over-engineer simple apps with SQL.