Limits
Fauna is a shared, globally accessible database service. To optimize query performance and share resources in a fair manner, the following global limits are in place. See the Plan details documentation for the throughput limits of each of the Fauna plans.
| Constraint | Limit |
|---|---|
Document size |
8 MB/document |
Query size |
16 MB/query |
Transaction size |
16 MB/transaction |
12,000/transaction |
|
Default query execution time when no timeout is defined |
2 minutes |
Maximum query execution time even when a timeout is defined |
10 minutes |
Concurrent index builds |
500 per account per region group Index builds, for collections with more than 128 documents, are handled by a background task. The limit prevents an excessive number of indexes that must be built simultaneously. Fauna returns an HTTP 429 error When this limit is exceeded and the transaction is aborted. |
Index entries |
64 KB An index entry includes its |
Protective service limit |
Fauna returns HTTP status code 429 if a query causes read, write, or compute ops to generate excessive traffic that exceeds protective service limits. See Plan throughput limits. |
As a document database, Fauna is not recommended as a storage solution for arbitrary binary blob data, such as images and PDFs.