Scaling bottleneck project

Question

Walk through a project where scale exposed a bottleneck. Cover the workload, the measured limit, your model of the bottleneck, the intervention you owned, and the evidence that the limit moved.

## Preparation

- Write the user or stakeholder, the constraint, and the decision in one sentence each.
- Choose one measurement or observable fact that can support the answer.
- Name one alternative and the reason it was not selected.

## Review checklist

1. Did I state the concrete constraint before describing the solution?
2. Did I separate my own decision and work from the team's work?
3. Did I name evidence or a measurement rather than relying on confidence?
4. Can I answer every follow-up without changing the original facts?

## Staged follow-ups

1. Show how you distinguished the bottleneck from a symptom.
2. Explain the rejected optimization.
3. Describe the rollout and rollback plan.
4. Predict the next bottleneck after another tenfold increase.