Purpose

Design Firestore access patterns that are secure, queryable and cost-aware before the app scales.

When to use

• Designing collections and documents.
• Optimizing Firestore queries or listeners.
• Estimating Firestore cost risk.
• Reviewing indexes, pagination or real-time updates.

Inputs to inspect

• Data model diagrams or repository code
• Collections, documents and subcollections
• Queries, listeners and pagination
• Indexes and Security Rules
• Offline persistence and sync behavior