Async API

Introduction

info

This implementation is still in development. Contributions are welcome!

The Async API is an implementation of the Langflow API that uses Celery to run the tasks asynchronously, using a message broker to send and receive messages, a result backend to store the results and a cache to store the task states and session data.

Configuration

The folder ./deploy in the Github repository contains a .env.example file that can be used to configure a Langflow deployment. The file contains the variables required to configure a Celery worker queue, Redis cache and result backend and a RabbitMQ message broker.

To set it up locally you can copy the file to .env and run the following command:

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docker compose up -d

This will set up the following containers:

• Langflow API
• Celery worker
• RabbitMQ message broker
• Redis cache
• PostgreSQL database
• PGAdmin
• Flower
• Traefik
• Grafana
• Prometheus

Testing

To run the tests for the Async API, you can run the following command:

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docker compose -f docker-compose.with_tests.yml up --exit-code-from tests tests result_backend broker celeryworker db --build