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Payment Gateway Aggregator: How Stripe Routes Through 15+ Gateways in Milliseconds to make Your ₹175 Payment

26 April 2026 / 9 min read

How payment aggregators score gateways, handle idempotency, circuit breakers, retries, latency budgets, and metrics pipelines.

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This article covers the architecture behind payment gateway aggregators: scoring, gateway affinity, circuit breakers, retry decisions, idempotency, latency budgets, and metrics pipelines.