Overreacted, the personal blog of Dan Abramov, offers developers insights into React.js development, JavaScript ecosystem, and software engineering principles. Developers can learn about React.js best practices, state management patterns, and performance optimization techniques through Dan's thoughtful analysis and explanations. Additionally, the blog covers broader topics such as functional programming concepts, software architecture, and developer productivity, providing  insights for frontend developers and JavaScript enthusiasts alike.

Overreacted

The AT Protocol reimagines social media using a filesystem paradigm where user data lives in personal repositories as JSON records, not trapped inside apps. Each user has an 'everything folder' containing collections of records (posts, likes, follows) defined by lexicons—schemas that work like file formats. Apps become reactive views over this distributed social filesystem. Identity uses DIDs (decentralized identifiers) that survive hosting changes, enabling permanent at:// links to records. Records reference each other across users' repositories, forming a web of JSON. Apps subscribe to repository streams, cache relevant slices, and compute derived data locally. This separation means users control their data, can switch hosting providers, and multiple apps can operate on the same underlying records—making third-party experiences first-class citizens.

A Social Filesystem — overreacted