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Notes from building backend-heavy products.

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26 Apr 2026 / 9 min read

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

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

paymentspayment-gatewaypayment-systemsrazorpaystripe