Firestore API

Cloud / Storage

Google Firebase

NoSQL document database with real-time sync, offline support, and automatic multi-region replication

Reported Latency

Typical performance from public reports -- not live measurements

Average: 75ms
p50
50ms
p95
180ms
p99
350ms

Reliability

99.95%observed uptime

Pricing

Free tier

1 GiB storage, 50,000 reads/day, 20,000 writes/day

Paid starts at

$0.06 / 100,000 reads

Technical Details

Authentication

OAuth 2.0 / Firebase Auth

Rate limit

Varies by plan

Protocols

RESTgRPCWebSocket

SDKs

JavaScriptPythonGoJavaSwiftKotlinC++

Regions

USEUAsia-Pacific
DocumentationBase URL

Last updated: 2026-04-12