Cloud Firestore (Storage)

firebase.google.com/products/firestorePaaSstorage/cloud-firestoreJSON compare report an error provider JSON

Free allowance: 1 GiB stored data on the free tier; 50,000 document reads/day; 20,000 writes/day; 10 GiB/month outbound
Verdict: fails: quotathe free allowance is too small to matter
Cost: free tier
Identity: email?placeholder, not evidence; card unknown, phone unknown
Binding limit: request-rate20,000 writes/day
Evidence: reported3 sources; a third party said so
Freshness: stale on 2026-11-05checked 2026-10-21 (inherited); stale on 2026-11-05

Free tier	1 GiB stored data on the free tier; 50,000 document reads/day; 20,000 writes/day; 10 GiB/month outbound unit GiB; metered on stored-bytes
Price	none stated
Limits	request-rate (binding) 20,000 writes/day source 1 GiB total; 1 MiB per document; 1 MiB - 89 bytes per field value; 50K reads/day; 20K writes/day; 7.5 KiB max index entry; only ONE free database per project
Binding	request-rate calls are bounded rather than bytes, which is fatal to a nightly job on a monthly counter
Identity	email (placeholder) not published
Egress	Metered — 10 GiB/month outbound free, then GCP rates. 10 GiB/month = ~340 MB/day, 1,500x short of 500 GB/day. free allowance: 10 GiB per month
Per-object cap	not stated
Retention	not stated
Interface	rest rest
Tooling	Firebase Admin SDK, client SDKs, REST/gRPC API, `gcloud firestore export` to a bucket; documents are JSON-ish with a native `Bytes` type (no base64 bloat)
Composes with	1 GiB per database; 'Cloud Firestore allows exactly one free database per project'. 500 GB needs 500 projects, each with its own billing-less free quota and its own 10 GiB/month egress.
Reliability	Reliable; has a native Bytes type so no base64 overhead. The 20K writes/day cap means 1 GiB at 1 MiB/doc = 1,024 documents, which is trivially fine, but re-writing or migrating burns the quota. Single-field indexes add storage you do not control.

Evidence 3

date	source	what it proved
2026-10-21	firebase.google.com/docs/firestore/quotas	'Stored data \| 1 GiB'; 'Outbound data transfer \| 10 GiB per month'; 'Maximum size for a document \| 1 MiB (1,048,576 bytes)'; 'Maximum size of a field value \| 1 MiB - 89 bytes'
2026-10-21	firebase.google.com/docs/firestore/pricing	'Document reads 50,000 per day'; 'Document writes 20,000 per day'; 'Cloud Firestore allows exactly one free database per project'
2026-10-21	source not published	arithmetic: 50,000 reads/day x 1 MiB max document = 52.4 GB/day of theoretical read — 10x short of 500 GB/day, and the 10 GiB/month egress cap cuts it to 340 MB/day

More fields 1

{
 "dead_end": {
  "failure_class": "quota",
  "why": "1 GiB stored data on the free tier; 50,000 document reads/day; 20,000 writes/day; 10 GiB/month outbound",
  "retry_when": null,
  "first_recorded": "2026-10-21"
 }
}

Unknown values 4

$.per_object_cap.notes the field may be stated in a source that was not read
$.per_object_cap.stated the field may be stated in a source that was not read
$.retention.notes the field may be stated in a source that was not read
$.retention.stated the field may be stated in a source that was not read