Tutorials, comparisons & deep-dives
Branch previews for Django, Rails, Laravel, FastAPI, and every other Docker backend.
Instant Preview Environments Under the Hood: Docker, WebSockets, and a Next.js Control Plane
Docker containers, WebSocket event streams, and a Next.js control plane — the architecture that ships a live preview URL to every PR in under 60 seconds. No staging servers, no polling.
Stop Merging Blind: Preview Environments for Every Developer
"Works on my machine" stops being an excuse when you can send a live preview URL. Here's why solo developers and small teams need branch previews — not just teams with staging servers.
Why Your Cloud Bill Tripled Last Sprint (And How to Fix It)
Usage-based cloud pricing sounds fair until you have a heads-down sprint. Here's the math on what Railway actually costs a 3-engineer team — and why flat pricing changes the calculus.
We built PreviewDrop because every Rails team we knew was still copy-pasting localhost URLs
Vercel trained a generation of developers to expect a live URL on every branch they push. Then those developers joined a Rails shop and discovered that expectation doesn't exist for backend teams.