Relay: file delivery with a dashboard

Every product we ship needs somewhere to put its releases: installers, APKs, game builds. Relay is that place — a file delivery service with real URLs, real caching, and a dashboard that shows what got downloaded.

Scoped to sites, built for CI

Each site gets its own hashed API key, so a build pipeline can push a release with one request — including presigned multipart uploads for multi-gigabyte artefacts that go straight to object storage without touching the app.

Fast where it matters

Public files are mirrored to a stable, anonymously readable URL with long-lived cache headers and served through an edge cache, while every download still passes through a counting endpoint first — so the stats stay honest and the bytes stay fast. Private files use expiring signed links instead.

Watch it work

The dashboard shows files, storage, downloads, and estimated bandwidth per site, with a 30-day chart, visibility toggles, and per-file signed links. Custom domains let a client serve downloads from their own hostname with a single CNAME.

Relay already delivers our own releases — and it is how the download buttons across this site will light up next.