Series: Engineering Platforms at Scale: The Constraint Sequence
In distributed systems, solving the right problem at the wrong time is just an expensive way to die. We've all been to the optimization buffet - tuning whatever looks tasty until things feel 'good enough.' But here's the trap: your system will fail in a specific order, and each constraint gives you a limited window to act. The ideal system reveals its own bottleneck; if yours doesn't, that's your first constraint to solve. Your optimization workflow itself is part of the system under optimization.
3 posts in this series
-
Users abandon before experiencing content quality. No amount of supply-side optimization matters. Latency kills demand and gates every downstream constraint. Analysis based on Duolingo's business model and scale trajectory.
22 November 2025
-
Once latency is validated as the demand constraint, protocol choice determines the physics floor. This is the second constraint - and it's a one-time decision with 3-year lock-in.
29 November 2025
-
While demand-side latency is being solved, supply infrastructure must be prepared. Fast delivery of nothing is still nothing. GPU quotas—not GPU speed—determine whether creators wait 30 seconds or 3 hours. This is the third constraint in the sequence—invest in it now so it doesn't become a bottleneck when protocol migration completes.
06 December 2025
← Back to all posts