Verified history
This means HyperObserve has not found sufficient first-party evidence for a dated before-and-after event. It does not mean Firebase has never changed. Undated values are kept in the current baseline below instead of being presented as history.
Current monitored baseline
HyperObserve currently monitors 6 scoped observations for Firebase. The baseline covers generation-specific function duration, Hosting request timeout, document size, maximum API request, transaction duration, index configuration and entries. Each value retains its plan, product, endpoint, region, account, or runtime qualifier so a future change can be compared against the correct scope.
| Constraint | Current value | Scope | Verified source |
|---|---|---|---|
| generation-specific function durationGeneration and trigger type determine the ceiling. | 1st gen: 540s; 2nd gen HTTP: 60m; scheduled: 30m; event: 540s | Cloud Functions for Firebase | FirebaseAug 22, 2026 |
| Hosting request timeoutThe Hosting request can time out before a longer Cloud Run backend maximum. | 60 seconds | Hosting rewrites to serverless | FirebaseAug 22, 2026 |
| document sizeIndex entries and field-value indexing have separate size constraints. | 1 MiB | Cloud Firestore | FirebaseAug 22, 2026 |
| maximum API requestTransactions and commits also have time and transformation constraints. | 10 MiB | Cloud Firestore | FirebaseAug 22, 2026 |
| transaction durationIdle time can end a transaction well before the total-duration ceiling. | 270 seconds; 60-second idle expiration | Cloud Firestore | FirebaseAug 22, 2026 |
| index configuration and entriesSingle-field configurations and entry byte sizes impose additional ceilings. | 200 composite indexes without billing; 1,000 with billing; 40,000 entries/document | Cloud Firestore | FirebaseAug 22, 2026 |
Tracked constraints and impact
Functions, Hosting, and Firestore duration, request, document, and index limits. A change is recorded only when it alters a constraint developers can act on, such as capacity planning, request shaping, model selection, deployment configuration, storage design, retry behavior, or account budgeting.
Firebase Function Timeout Limits
Firebase Function Timeout Limits, verified against Firebase's official documentation with scope, implementation impact, caveats, and a direct check.
Firebase Hosting Serverless Timeout
Firebase Hosting Serverless Timeout, verified against Firebase's official documentation with scope, implementation impact, caveats, and a direct check.
Cloud Firestore Document Size Limit
Cloud Firestore Document Size Limit, verified against Firebase's official documentation with scope, implementation impact, caveats, and a direct check.
Cloud Firestore API Request Size
Cloud Firestore API Request Size, verified against Firebase's official documentation with scope, implementation impact, caveats, and a direct check.
Cloud Firestore Transaction Time Limit
Cloud Firestore Transaction Time Limit, verified against Firebase's official documentation with scope, implementation impact, caveats, and a direct check.
Cloud Firestore Index Limits
Cloud Firestore Index Limits, verified against Firebase's official documentation with scope, implementation impact, caveats, and a direct check.
How a change is verified
- Compare the current first-party statement with the previously stored observation, including the exact plan, model, runtime, endpoint, region, and account scope.
- Separate a true product change from documentation clarification, temporary capacity, configurable account state, or a limit that applies to a different execution path.
- Preserve the old and new values, official source, effective date when disclosed, detection date, and practical impact. If those elements cannot be supported, no historical event is published.
Official sources monitored
These first-party documents support the current Firebase baseline. HyperObserve links directly to them so you can confirm the live wording before making a production decision.
Generation-specific duration, memory, networking, and event limits
Hosting request timeout and concurrency
Document, transaction, request, index, rules, and export limits