What is Webhook?

A webhook, also known as a reverse API or HTTP callback, is a way for an application to deliver real-time information to other applications. Unlike traditional APIs where the client polls for data, webhooks push data to the client as soon as it's available. This makes webhooks ideal for event-driven architectures and real-time applications. Webhooks are widely used for notifications, alerts, and maintaining data consistency across integrated systems.

Webhooks operate on a simple principle:

• Registration: The client application registers a URL (the webhook endpoint) with the service providing the webhook.

• Event Occurrence: When a specific event occurs in the service, it triggers the webhook.

• HTTP POST Request: The service sends an HTTP POST request to the registered URL with relevant data about the event.

• Processing: The client application receives the POST request and processes the data.

• Response: The client typically sends a 2xx status code to acknowledge receipt

Key aspects of webhooks:

• Payload: The data sent in the webhook, usually in JSON format.

• Security: Often implemented using secret tokens or HTTPS to ensure authenticity and privacy.

• Retry Mechanism: Many webhook providers retry failed deliveries to ensure reliability.

For Flowdrive, webhooks are essential for creating responsive, integrated file management solutions:

• Real-time Updates: Notify external systems immediately when files are uploaded, modified, or deleted.

• Automation Triggers: Initiate automated workflows in response to file events in Flowdrive.

• API Efficiency: Reduce the need for frequent polling, improving overall system efficiency.

• Integration Flexibility: Allow diverse systems to react to Flowdrive events without constant querying.

• Webflow Integration: Enable real-time updates in Webflow sites when assets in Flowdrive change.

• Metadata Synchronization: Keep external systems updated with the latest file metadata changes.

Webhooks complement Flowdrive's RESTful API, providing a push-based mechanism alongside the traditional pull-based API. They're particularly useful for maintaining data consistency in complex integrations and for triggering actions based on File Versioning or Large File Hosting events.

1. When a new file is uploaded to Flowdrive, a webhook notifies a project management tool, automatically creating a task for the team to review the new asset.

2. A webhook triggers a CDN cache purge whenever a file in Flowdrive is updated, ensuring that the latest version is always served.

3. An e-commerce platform receives a webhook from Flowdrive when product images are updated, automatically refreshing the website's product catalog.