GCP Firestore

Cloud Firestore is a flexible, scalable NoSQL document database. It supports real-time synchronization, offline access, and scales automatically. Available in Native mode (real-time + offline) and Datastore mode (server-only, higher throughput).

Core Concepts

• Document — a record containing fields (like a JSON object), identified by ID
• Collection — a group of documents
• Subcollection — a collection nested under a document
• Reference — a pointer to a document or collection location
• Real-time listener — streams live changes to documents or queries
• Security Rules — declarative access control for client SDKs

CRUD Operations

# Initialize and write documents
from google.cloud import firestore