What is Webhook
HTTP callback for event notifications
Webhook is a mechanism for automatically notifying external systems about events via real-time HTTP requests.
How It Works
- URL Registration — specifying the address for receiving notifications
- Trigger Event — action that initiates the sending
- HTTP POST Request — transmitting event data
- Response Handling — confirming receipt
Benefits
- Instant notifications without polling
- Server resource savings
- Simple integration between systems
- Solution scalability
Applications
- Payment systems (Stripe, PayPal)
- CI/CD pipelines (GitHub Actions)
- CRM integrations
- Messengers (Telegram Bot API)
Security
- Request signature verification (HMAC)
- IP address whitelist
- HTTPS required
- Timeouts and retries