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The distilled bump makes a container application's `configuration`,
`configuration.image`, `instances` and `maxInstances` optional, because
an application created for a Durable Object-managed container carries
none of them. Read them as absent rather than assume a legacy
application: instance counts default to 0, a missing configuration to
`{}`, and an existing application with no image publishes one instead
of reusing it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
`schedulingPolicy: "durable_object"` makes a Container Durable
Object-managed: the application carries no image, instance type or
instance count, and the Durable Object picks an image and an instance
type each time it starts a container.
```ts
Cloudflare.Container<Sandbox>("SANDBOX", {
className: "Sandbox",
schedulingPolicy: "durable_object",
images: {
node: { context: "./images/node" },
python: { image: "python:3.13-slim" },
},
});
// in the Durable Object
const images = yield* container.images;
yield* container.start({ image: images.python, instance: "standard-2" });
```
- `images` names the images, each built or re-published like the
container's own (which is published as `"default"` when declared)
into a repository of its own, then prepared on Cloudflare's network
(`POST image-preparations`, polled as wrangler does).
- The Worker upload declares `{ class_name, name, images }` for the
class, so the images are versioned with the Worker.
- Precreate only publishes images; reconcile creates the image-less
application once the Worker has created the namespace. Switching an
existing container between the two models deletes and recreates its
application, since a namespace backs one.
- The runtime handle gains `images` and `snapshotContainer()`.
- `alchemy dev` runs the `"default"` (or first) image; `images` is not
emulated locally. `main` (a bundled program) is refused in this mode,
because the application has no environment to carry its bindings.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Contributor
|
Install the packages built from this commit: alchemypnpm install https://pkg.alchemy.run/alchemy/pr:1904:1c859a3@alchemy.run (6)pnpm install https://pkg.alchemy.run/@alchemy.run/better-auth/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@alchemy.run/cloudflare-runtime/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@alchemy.run/frontend-frameworks/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@alchemy.run/node-utils/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@alchemy.run/floci/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@alchemy.run/pkg/pr:1904:1c859a3@distilled.cloud (16)pnpm install https://pkg.alchemy.run/@distilled.cloud/core/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/acme/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/aws/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/axiom/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/cloudflare/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/doppler/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/fly-io/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/github/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/hetzner/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/infisical/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/neon/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/prisma/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/planetscale/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/railway/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/stripe/pr:1904:1c859a3pnpm install https://pkg.alchemy.run/@distilled.cloud/zerossl/pr:1904:1c859a3Published |
…napshot
The live suite now round-trips a filesystem snapshot: write a marker
with `exec`, `snapshotContainer()`, destroy, start again from
`{ containerSnapshot: { id } }` and read the marker back. The round
trip runs once with a long timeout, since a readiness retry would
restart it mid-flight, and reports each step's duration.
`exec` runs as the image's own user: with `user: "root"` Cloudflare
answers an internal error.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A Durable Object-managed container can now declare no images at all.
Its Durable Object starts Cloudflare's pre-distributed system image by
name, or a filesystem snapshot of one:
```ts
Cloudflare.Container<Sandbox>("SANDBOX", {
className: "Sandbox",
schedulingPolicy: "durable_object",
});
container.start({ image: "cloudflare/debian-trixie", instance: "lite" });
container.start({ containerSnapshot: { id }, instance: "standard-1" });
```
The upload declares such a class by `{ class_name, name }` alone, the
image-less shape wrangler sends. `alchemy dev` refuses one with a
message, since workerd starts a declared image and has neither the
system image nor snapshots.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
|
Same response-shape note as on #1905: live |
Contributor
Author
This was referenced Oct 3, 2026
Butch78
added a commit
to Butch78/ficus
that referenced
this pull request
Oct 3, 2026
alchemy-run/alchemy#1904 is closed in favour of #1905, so alchemy is pinned to #1905's preview instead. Under it: - Changing an application's scheduling policy needs a new application and a new Durable Object class, so scoring moves to `Scorer` and the agent's container to `Worktree`, each with a new container application (`ScorerContainer`, `WorktreeContainer`). The tree and agents bind the new classes. - The image is a named image, `images.scorer`; `env` is not valid on the policy, so the context is read through the scorer binary's hash, which keeps the build edge. - `Cloudflare.Containers.bind` attaches a container without starting it, which replaces the internal `~alchemy/Container/Binding` key. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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schedulingPolicy: "durable_object"makes a Container Durable Object-managed: the application carries no image, instance type or instance count, and the Durable Object picks both each time it starts a container (Cloudflare's announcement)."default"when it has one, is built or re-published into its own repository. It is then prepared on Cloudflare's network (image-preparations, polled the way wrangler polls it).{ class_name, name, images }for the class, so images are versioned with the Worker.imagesandsnapshotContainer().imagesmay be empty. The Durable Object then starts Cloudflare's pre-distributedcloudflare/debian-trixieby name, or a snapshot of it. The upload declares the class as{ class_name, name }.alchemy devruns the"default"image, or the first one if there is no default;imagesis not emulated locally.mainis refused in this mode: the application has no environment to carry the bundled program's bindings.Needs alchemy-run/distilled#684 (the submodule points at that branch). The distilled bump also makes an application's
configuration,instancesandmaxInstancesoptional; the first commit adapts existing reads to that.🤖 Generated with Claude Code