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Merged
marcoieni merged 1 commit into from
Mar 6, 2026
Merged

mention fastly cdn #1021

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18 changes: 9 additions & 9 deletions src/infra/docs/cdn.md
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Expand Up @@ -32,8 +32,7 @@ can't make use of other features of a CDN such as caching.

Most of the project's resources are hosted on [AWS]. Static content is stored in
[Amazon S3], while dynamic content is loaded from a server. Both types of
content are served through [Amazon CloudFront], the [Content Delivery Network]
of AWS.
content are served through the CDNs [Amazon CloudFront] and [Fastly].

When a user access a resource, e.g. they are trying to download a crate, they
will access the resource through the CDN. Different _distributions_ map domain
Expand All @@ -42,11 +41,11 @@ downloading a crate from `static.crates.io` goes through a _distribution_ that
fetches the crate from an S3 bucket and then caches it for future requests.

```text
┌──► S3 (static content)
│
User ───────► CloudFront ────┤
│
└──► Server (dynamic content)
┌──► S3 (static content)
│
User ───────► CDN ────┤
│
└──► Server (dynamic content)
```

## Distributions
Expand All @@ -63,7 +62,7 @@ from `static.rust-lang.org`. The same is true when Rust is installed in a CI/CD
pipeline, which is why this distribution has by far the highest traffic volume.

Rust binaries are static and are stored in [Amazon S3], from where they are
served by the CloudFront distribution.
served by the CDNs.

The distribution for `static.rust-lang.org` has a custom router that runs in a
[AWS Lambda] function. The router provides a way to list files for a release and
Expand All @@ -85,4 +84,5 @@ distribution.
[aws]: https://aws.amazon.com/
[aws lambda]: https://aws.amazon.com/lambda/
[content delivery network]: https://en.wikipedia.org/wiki/Content_delivery_network
[rust-lang/simpleinfra]: https://github.com/rust-lang/simpleinfra
[fastly]: https://www.fastly.com/
[rust-lang/simpleinfra]: https://github.com/rust-lang/simpleinfra