1. You must pass this 100%. You must know TS well. 2. Don't push back when they hint towards a preferred long-term fix. In theory, the customer is non-technical and doesn't need guaranteed acknowledgment that an intermediary action occurred in the database: just a visualization an action is occurring a la Coinbase tax document download. However, I suspect I got points docked for saying this and I lost time on the back-and-forth. 3. Keep it simpler than simple because my definition of "simple" (two tables + cronjobs/scheduler tasks + async task queue to handle distributed rate limiting) was too complex. I think the most naive solutions here will get more points.