webhooks

Webhook signature verification using HMAC authenticates payloads by computing a hash of the request body with a shared secret key, then comparing it to the signature header sent by the provider. This prevents tampering and confirms the sender's identity before processing the event.

Implement exponential backoff retry logic with idempotency keys to safely resend failed webhook events without duplicate processing. Track delivery state for each event, schedule retries at increasing intervals, and log outcomes for audit and debugging.

Store idempotency keys from incoming webhooks in a database or cache to detect and skip duplicate deliveries. Process each unique event exactly once, even if the webhook is retried multiple times due to network failures or timeouts.

Secure webhook endpoints with HMAC signature verification, rate limiting to prevent abuse, replay protection by validating timestamps, and endpoint lifecycle management to revoke compromised receivers. Validate all incoming data before processing.

Yes, webhooks enable real-time integration between services in event-driven architectures. Combine signature-based authentication, reliable delivery with retries, and idempotent processing to ensure secure, asynchronous event propagation across HTTP callbacks.

Webhook delivery systems should retry with exponential backoff, allowing endpoints to recover without losing events. Maintain delivery state tracking to distinguish temporary failures from permanent errors and retry according to configured schedules.