Cloudflare Containers adds runtime selection and filesystem snapshots

Cloudflare’s revised Containers architecture lets application code select an image and instance size at runtime. Filesystem snapshots, now in public beta, preserve a prepared workspace for later sessions or multiple isolated evaluations. A Durable Object controls the container’s lifecycle outside that workspace, allowing the agent’s coordinating state to survive when Linux compute stops.

Cloudflare · Sep 30, 2026

Why it matters

Agent platforms can reuse prepared environments without tying their controller to one running sandbox.

More context

Try the documented Durable Object scheduling policy with a small sandbox and a save-and-restore test. Immutable snapshots can supply the same repository and dependencies to repeated evaluations; check service pricing and limits before scaling.

Keep in mind

These are filesystem snapshots, not a claim to preserve running process memory. Startup measurements depend on workload and caching. Snapshot support is beta, and 1min has not reproduced performance or recovery tests.

Original read