Featured in Domain Arrivals · 2026-08-16

headroom asks what your Terraform will hit before it breaks

A local Terraform capacity analyzer that reads a plan file, builds its resource graph, and finds mismatched scaling ceilings across AWS, Azure, and Google Cloud.

Why it surfaced

headroom turns an invisible infrastructure problem into a concrete number: its fixture finds an application authorised for roughly 800 database connections against a ceiling of 450, alongside a subnet that runs out of addresses first. The CLI is a single Go binary with no agent, account, or required network calls, and the site explains its rules with unusually clear technical writing.