Payment Infrastructure

Orchestration, idempotency, webhooks, gateway abstraction.

• Idempotency in Payment APIs: Preventing Duplicate Transactions

  Idempotency keys, database-level safeguards, race condition handling, retry logic patterns, and real-world failure scenarios.

  10 min read · 2024-02-01

• Payment Orchestration Layer: Why You Should Abstract Your Gateways

  Multi-gateway strategy, webhook normalization, provider failover, routing logic, and vendor lock-in risks.

  12 min read · 2024-02-15

• Webhook Reliability: Handling Asynchronous Payment Events Safely

  Event ordering problems, deduplication strategy, idempotent webhook processing, dead-letter queues, replay handling.

  11 min read · 2024-03-01

• Avoiding Double-Spend in Distributed Fintech Systems

  Race conditions, optimistic vs pessimistic locking, isolation levels, event-driven consistency tradeoffs.

  10 min read · 2024-03-15