Firebase Realtime Database Skill

This skill defines how to correctly implement Firebase Realtime Database in Flutter applications, covering data modeling, queries, real-time sync, offline support, and security rules.

When to Use

Use this skill when working with Firebase Realtime Database for simple data models, low-latency sync, or presence functionality. For rich data models requiring complex queries and high scalability, use Cloud Firestore instead.

1. Database Selection

Choose Realtime Database when the app needs:

• Simple data models with simple lookups.
• Extremely low-latency synchronization (typical response times under 10ms).
• Deep queries that return an entire subtree by default.
• Access to data at any granularity, down to individual leaf-node values.
• Frequent state-syncing with built-in presence functionality.