fly-machines.html

Fly.io Machines

Docker containers at 30+ regions. Heavier than V8 isolates, full Node + binary support.

VISIT FLY.IO MACHINES

Quick facts

  • CategoryServerless function
  • LanguageAny (Docker)
  • PricingPaid
  • LicenseProprietary
  • Created2017
  • GitHub starsclosed
  • Cold startfast
  • PoPs30+
  • Node-compatYes

What it is

Fly.io Machines run Docker containers in 30+ regions globally. Not a true edge runtime — closer to a globally-distributed PaaS. Cold starts are seconds (not milliseconds), but full Node / Python / Go / any-binary support. Strong on stateful and regional workloads.

Best for

  • Apps requiring full Node / Python / Go runtimes globally
  • Stateful workloads (Postgres, game servers, real-time)
  • Multi-region deployments where regional latency beats true edge

When not to pick it

Skip Fly Machines for true edge needs (sub-50ms cold start globally) — V8 isolates win there. Skip for stateless API workloads where Workers / Edge Functions are simpler.

My take

Fly Machines is "edge-flavoured" PaaS, not true edge runtime. Right answer when you need full Node / Python globally; wrong answer when you need V8-isolate performance.

Links

Compare Fly.io Machines side-by-side

Fly.io Machines vs Cloudflare Workers →

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Cloudflare Workers

V8 isolates on 300+ PoPs. Sub-millisecond cold starts, lowest cost at scale, the edge default.

Read the take →

If Fly.io Machines is your pick — the next conversation is short

The 30-min call is where your edge runtime choice becomes a real architecture, an integration plan with your data layer + auth + build pipeline, and a price range you can take to your stakeholders.