Modelling Authorization for a Social Network with Postgres RLS and Drizzle ORM

The text discusses implementing secure access controls for a social network using Postgres' Row-Level Security (RLS) feature and Drizzle ORM. It covers the authorization model for a Twitter-inspired data model, including users, profiles, public posts, private chats, and chat messages. The implementation involved separating users and user profiles tables, setting up RLS policies for posts and comments, and handling complex requirements for private chats. The text also highlights challenges faced during the process, such as writing raw SQL policies, validating RLS policies, testing RLS policies, and pushing down logical constraints to the database layer.