Cirrus: ATProto Personal Data Server That Runs on Cloudflare Workers

Cirrus is a lightweight Personal Data Server (PDS) for the AT Protocol that runs on Cloudflare Workers, allowing users to store their Bluesky data (posts, follows, profiles, media) independently from the main platform. The serverless implementation uses Cloudflare's edge infrastructure for automatic scaling and pay-per-use pricing, while providing users with data sovereignty and the ability to migrate between hosting providers without losing their identity. Currently in experimental beta, the platform supports core features like repository operations, federation, and account migration, though users are advised to back up their signing keys and important data due to potential breaking changes.