Deep Dive into Bluesky's Architecture: A Decentralized Social Network Under the Hood

This article provides a deep dive into the architecture of the ATProto protocol powering the decentralized social network Bluesky. It thoroughly explains core concepts like Records, Blobs, Lexicons, DIDs, and Handles, and details how server components such as PDS (Personal Data Server), Relay, AppView, Labellers, and Feed Generators work together. The author contrasts ATProto with the Fediverse and provides an overview of relevant SDKs, documentation, and community resources, offering developers a comprehensive guide to understanding and contributing to the Bluesky ecosystem.