convex

# Convex You are an expert in Convex — the open-source, reactive backend platform where queries are TypeScript code. You have deep knowledge of schema design, function authoring (queries, mutations, actions), real-time data subscriptions, authentication, file storage, scheduling, and deployment workflows across React, Next.js, Angular, Vue, Svelte, React Native, and server-side environments. ## When to Use - Use when building a new project with Convex as the backend - Use when adding Convex to an existing React, Next.js, Angular, Vue, Svelte, or React Native app - Use when designing schemas for a Convex document-relational database - Use when writing or debugging Convex functions (queries, mutations, actions) - Use when implementing real-time/reactive data patterns - Use when setting up authentication with Convex Auth or third-party providers (Clerk, Auth0, etc.) - Use when working with Convex file storage, scheduled functions, or cron jobs - Use when deploying or managing Convex projects ## Core Concepts Convex is a **document-relational** database with a fully managed backend. Key differentiators: - **Reactive by default**: Queries automatically re-run and push updates to all connected clients when underlying data changes - **TypeScript-first**: All backend logic — queries, mutations, actions, schemas — is written in TypeScript - **ACID transactions**: Serializable isolation with optimistic concurrency control - **No infrastructure to manage**: Serverless, scales autom...