General requirements and limits

Chrome

69

Update Google Chrome

Edge

79

Update to the new Microsoft Edge

Firefox

62

Update Firefox to the latest release

Safari

12.1

Update to the latest version of Safari

Document size

8 MB per document.

Document size is the size of document once encoded. Fauna encodes documents in a binary format that’s smaller than raw JSON.

FSL schema are stored as documents and are subject to this limit.

Query size

16 MB per query

Query size is the size of the HTTP request payload.

Transaction size

16 MB per transaction

Transaction size is the total size of the transaction’s write. Read-only queries are not subject to this limit. Uses the size of binary-encoded document.

Compute operations

12,000 per transaction

Default query execution time even without a timeout

2 minutes

Maximum query execution time even with a timeout

10 minutes

Maximum number of collections per database

1,024

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.

If a transaction exceeds this limit, Fauna aborts the transaction and returns a 429 HTTP status code.

Index entries

64 KB

An index entry includes terms and values fields and must not exceed 64 KB.

Pagination size range

1 to 16000 (inclusive)

Minimum and maximum number of paginated values returned by the set.pageSize() or set.paginate() method.

UDF recursion limit

User-defined function (UDF) recursion is limited to a depth of 2048 calls.

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.

Array size

16,000 elements per Array.

String size

16,777,216 characters

Array.sequence() range limit

When calling Array.sequence(), the difference between the start and end values can’t exceed 16,000.