webhook-receiver-hardener

Webhook signature verification protects endpoints by using HMAC validation to ensure incoming requests are authentic. This approach prevents spoofed requests by cryptographically validating payloads before processing event data.

Webhook receivers process duplicate events when providers retry sending notifications. Implementing deduplication and idempotent processing logic prevents duplicate event handling, ensuring the same notification is processed only once even during retries.

Robust error handling ensures webhook receivers fail gracefully and return appropriate responses to the provider. This approach manages operational failures during event-driven architectures, maintaining reliability even when third-party integrations retry.

Redis-based deduplication provides a mechanism to prevent duplicate processing of webhook events. Implementing idempotency with Redis ensures reliable event handling by tracking processed notifications and filtering redundant retries.

Securing payment gateway webhooks requires signature verification, deduplication, and robust error handling to ensure legitimate notifications are processed only once. This hardens endpoints against operational failures and common security threats.