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108 lines
4.2 KiB
Markdown
108 lines
4.2 KiB
Markdown
<div align="center">
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<a href="https://alchemy.run">
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<img src="https://raw.githubusercontent.com/alchemy-run/alchemy/main/images/readme-hero.webp" alt="Alchemy — Infrastructure as Effects" width="360" />
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</a>
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<br />
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[](https://www.npmjs.com/package/alchemy)
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[](./LICENSE)
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[](https://alchemy.run/discord)
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**Infrastructure-as-Effects** — cloud infrastructure and application logic as a single, type-safe [Effect](https://effect.website) program.
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[Docs](https://alchemy.run) · [Tutorial](https://alchemy.run/tutorial/part-1) · [Examples](./examples) · [Discord](https://alchemy.run/discord)
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</div>
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---
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A Worker bound to a R2 bucket and serving objects from it:
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```typescript
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const Bucket = Cloudflare.R2.Bucket("bucket");
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export default Cloudflare.Worker(
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"api",
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{ main: import.meta.url },
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Effect.gen(function* () {
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const bucket = yield* Cloudflare.R2.ReadWriteBucket(Bucket);
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return {
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fetch: Effect.gen(function* () {
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const request = yield* HttpServerRequest;
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const object = yield* bucket.get(request.url);
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return HttpServerResponse.stream(object!.body);
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})
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};
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}).pipe(Effect.provide(Cloudflare.R2.ReadWriteBucketBinding)),
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);
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```
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One `ReadWriteBucket(Bucket)` call wires the binding, env var, and typed client — at deploy time and at runtime.
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---
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- **One program, one language.** Resources, Lambdas/Workers, IAM, and SDKs live in the same Effect program — no YAML, no second runtime.
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- **Bindings, not glue code.** `S3.GetObject(bucket)` wires the IAM policy, env var, and a typed SDK call in a single line.
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- **Errors in the type system.** Every cloud API failure is a tagged Effect error you handle — or don't — on purpose.
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- **AWS + Cloudflare today.** S3, SQS, DynamoDB, Kinesis, Lambda, EC2 / Workers, R2, D1, Durable Objects, Containers.
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- **Same code, every stage.** Local dev, `plan` / `deploy`, smoke tests, and CI all share one mental model.
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```sh
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bun add alchemy@latest effect@rc
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```
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## GitHub Action
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Use the root action to deploy `prod` from `main`, deploy PR previews as
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`staging-{number}`, and destroy PR previews when the PR closes:
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```yaml
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- uses: alchemy-run/alchemy@v1
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env:
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CLOUDFLARE_ACCOUNT_ID: ${{ vars.CLOUDFLARE_ACCOUNT_ID }}
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CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
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GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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```
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The workflow must install the `alchemy` CLI before this action runs.
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## Bootstrap with an AI coding agent
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Paste this into Claude Code, Cursor, or any agent that can fetch a URL:
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```
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You are an Alchemy expert. Read https://alchemy.run/llms.txt to load the
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full documentation index, then act as my pair on this project.
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Goal: help me set up, build, test, and deploy a cloud application with
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`alchemy` (Infrastructure-as-Effects, powered by Effect).
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Follow the patterns from the docs and the /examples folder. Stay idiomatic
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to Effect: use Layers for wiring, return Effects from lifecycle code, and
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keep infra and runtime in the same program. Ask before introducing new
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dependencies or breaking conventions.
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```
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## Learn more
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- [What is Alchemy?](https://alchemy.run/what-is-alchemy) — the framework in 2 minutes
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- [Getting Started](https://alchemy.run/getting-started) — your first Stack
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- [Tutorial](https://alchemy.run/tutorial/part-1) — five-part walkthrough to a tested, CI-deployed app
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- [Examples](./examples) — runnable projects on AWS and Cloudflare
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- [llms.txt](https://alchemy.run/llms.txt) — agent-ready documentation index
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> **alchemy** is in alpha. Expect breaking changes. Come hang in our [Discord](https://alchemy.run/discord).
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## Credits
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### Blacksmith
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Thanks to [Blacksmith](https://blacksmith.sh/?ref=alchemy.run) for sponsoring our CI runners. Their fast Linux, macOS, and Windows runners help us test our packages across platforms and deploy our content-heavy website in mere minutes.
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## License
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Licensed under the [Apache License 2.0](./LICENSE). See
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[Third-Party Licenses](./THIRD_PARTY_LICENSES.md) for code incorporated from
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upstream projects.
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