How to use Google Cloud Firestore

· Category: Cloud Computing

Short answer

Cloud Firestore is a serverless NoSQL document database with real-time sync, automatic scaling, and strong consistency.

Steps

  1. Create a Firestore database in Native mode.
  2. Structure data as collections of documents.
  3. Query with SDKs or the console:
db.collection('users').where('age', '>', 21).get()
  1. Enable offline persistence for mobile and web clients.

Tips

  • Denormalize data for query performance; use subcollections for hierarchy.
  • Security rules control access at the document level.
  • Export data regularly for backup and compliance.

Common issues

  • Complex filtering across fields requires composite indexes.
  • Document size limit is 1 MB; store large blobs in Cloud Storage.