Productive Follow-Ups

[After: "Use Redis for session storage"] "Why Redis over Memcached specifically? What would I lose by choosing Memcached instead for this use case?" "Walk me through the failure scenario: Redis pod restarts under load. What happens to active sessions? Does the answer change if I enable AOF persistence?" "We have 1,500 concurrent users now. At what scale does a single Redis setup start failing, and what's the migration path from there?" "What's the most common mistake teams make when first setting up Redis for sessions? Give me a concrete incident story." "Make the strongest case for NOT using Redis here. What would a skeptic say?"

[After: "This looks like a promising business model"] "Be more critical. What's the single biggest strategic flaw that you softened or omitted because I might not want to hear it?" "What does the most common failure mode look like for a business exactly like this? Give me a specific archetype — a real company or a named pattern — that tried this and failed." "Name the one assumption in my model that, if wrong, makes everything else irrelevant. How could I cheaply test it in 2 weeks?" "Write the Series A rejection email from a skeptical investor who passed on this deal."