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Webhook Learning Resources
Everything you need to know about webhooks. From the basics to advanced topics like security, idempotency, and testing strategies.
What Is a Webhook? A Developer's Guide
A webhook is an HTTP request that a server sends to your application when something happens. Instead of your application repeatedly asking "did anythi...
Webhooks vs API Polling: When to Use Which
When your application needs to know about changes in an external system, there are two fundamental approaches: polling and webhooks. Polling means you...
Webhook Security Best Practices
Webhook endpoints are publicly accessible URLs that accept incoming HTTP requests. Anyone who knows (or guesses) your endpoint URL can send fake reque...
How to Verify Webhook Signatures
Webhook signatures are cryptographic hashes that prove a webhook request genuinely came from the claimed provider and has not been tampered with in tr...
Webhook Retry Logic: Handling Failures Gracefully
Webhook deliveries fail for many reasons: your server is temporarily down, a deployment is in progress, your handler has a bug that causes a 500 error...
Idempotent Webhook Handlers: Why and How
An operation is idempotent if performing it multiple times produces the same result as performing it once. In the context of webhooks, an idempotent h...
Webhook Payload Formats: JSON, Form Data, and XML
The vast majority of modern webhook providers send payloads as JSON with the header. JSON is human-readable, widely s...
How to Debug Webhooks in Development
Debugging webhooks is harder than debugging regular API calls for several reasons. First, you do not control when webhooks arrive — they are triggered...
Webhook Testing Strategies for Production
Testing webhook handlers presents unique challenges compared to testing regular API endpoints. Your handler is the server receiving requests, not the...
Localhost Tunneling Explained: How It Works
When you run a web server on your development machine (typically at or ), it is only accessible from your own compute...