FQL v4 will be decommissioned on June 30, 2025. Ensure that you complete your migration from FQL v4 to FQL v10 by that date.

Fauna accounts created after August 21, 2024 must use FQL v10. These accounts will not be able to run FQL v4 queries or access the v4 Dashboard.

For more details, see the v4 EOL announcement and migration guide. Contact support@fauna.com with any questions.

HTTP timeouts

This section describes recommended best practices for handling HTTP errors.

Causes of HTTP 503 errors

The 503 HTTP status response code indicates that a timeout occurred, which could be caused by contended queries or queries with high compute operations, for example.

How to recover from timeout errors

The best practice for handling 503 responses is to retry the query. Initially, retry using a smaller timeout value so your query can fail faster. Retry, applying an exponential back-off time so you are not continuing to query while posting queries can never succeed.

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