At-least-once. Это не баг провайдера. Это ваша архитектурная проблема
Думал, зайду в крипту и буду просто дёргать API блокчейна. Не вышло. Захожу в проект. Стек: FastAPI, PostgreSQL, Redis как Celery broker, Celery worke…
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I Spent a Week Securing Webhook Ingestion. The Real Attack Surface Was Delivery.
I ran the security review two weeks after the first deployment. The ingestion side looked solid: HMAC signature verification using crypto.timingSafeEq…