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

For more details, review the migration guide. Contact support@fauna.com with any questions.

Welcome to the Fauna v4 documentation

FQL v4 end of life

Published: June 4, 2024

FQL v4 will be decommissioned on June 30, 2025. If you’re currently using FQL v4, you will need to migrate your queries to FQL v10 by that date.

Since launching FQL v10 almost a year ago, customers who moved their production workloads to FQL v10 have given us overwhelmingly positive feedback on it. They have found FQL v10 easier to use, easier to maintain, and more powerful than previous versions of FQL.

To help make sure that all users are aware and ready for this change, we will temporarily limit FQL v4 queries for two short "brownout" periods in the weeks before the service is decommissioned.

How do I migrate?

Transition from FQL v4 to FQL v10 can be done incrementally and requires no changes to your underlying data.

We’ve provided a v4-to-v10 migration guide and an FAQ to give you more details on this transition.

You can also review the FQL v10 Language and API guide, to familiarize yourself with FQL v10 and its capabilities. FQL v10 features include:

  • A TypeScript-inspired syntax

  • Lightweight v10 client drivers

  • Collection-oriented indexes

  • Improved error responses

  • Static typing

Contact Fauna at support@fauna.com with any questions.

Migration resources

Migrate to FQL v10

Learn about notable changes between FQL v4 and v10 and how to migrate your application.

v10 migration FAQ

Get answers to common questions related to FQL v4-to-v10 migrations.

What is Fauna v4?

Learn More Fauna is a flexible, developer-friendly, transactional database delivered as a secure and scalable cloud API. Fauna combines the flexibility of NoSQL systems with the relational querying and transactional capabilities of SQL databases.

Try it out

Quick start

Get up and running quickly with an interactive introduction to Fauna.

Quick start

Build a sample app

Sample apps show Fauna features and capabilities in an application context.

Sample apps

New to Fauna Query Language?

The SQL to FQL translation reference can help you get started.

FQL for SQL Users

Workshops

Build AWS applications.

Workshops

Driver support

To start querying Fauna from your application code, choose your language:

JavaScript
JS/Node

Java
Java

C#
C#

Go
Go

Python
Python

Scala
Scala

What is in the documentation?

These three main content sections can help you learn Fauna:

Cookbook

Cookbooks icon Query and code examples for databases, collections, indexes, and user-defined functions.

Cookbook

Tools

Tools icon Full descriptions of the tools available with Fauna.

Tools

API Reference

API Reference icon Complete reference materials for the APIs you can use to interact with Fauna.

API reference

Explore key features

A selection of features that make Fauna easy to get started, powerful, and unique:

Security

Configure authentication and access controls.

View docs

Data Import

Import JSON or CSV data into your database.

View docs

Streaming

Stream changes to a client application.

View docs

Backups

Learn about built-in daily backup management and recovery.

View docs

Query Log

Download near real-time query logs for enhanced database observability.

View docs

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