Why Webhook Retry Logic Fails and How Exponential Backoff Fixes It

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Webhooks are inherently unreliable because they operate over public internet infrastructure, making them vulnerable to network blips, server overloads, and transient errors. Naive retry strategies — such as immediate or linear retries — can worsen the situation by overwhelming already-struggling servers, effectively causing a self-inflicted denial-of-service. Exponential backoff addresses this by progressively increasing wait times between retries, giving receiving systems more time to recover. Major providers handle retries differently: Stripe implements automatic retries with backoff, while GitHub does not retry failed deliveries at all and expects developers to build their own recovery workflows. Architectural patterns such as idempotency keys, dead-letter queues, and circuit breakers are recommended to build a truly reliable webhook delivery system.

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