Functions with 1800s (extended-duration beta) rarely reuses instances: ~20× more new instances
TL;DR Under Fluid compute, a function with maxDuration = 1800 starts a new instance roughly every 30 requests. The same code at 300s or 800s starts one every 600–700 requests. Requests routed to those new instances spend ~2.2–3.0s on the platform before the handler runs. This shows up a
