TypeScript-end-to-end backend with reactive queries
Convex is a backend platform where you write your data model, queries, and mutations in TypeScript and get reactive, auto-cached query subscriptions for free. Think Firebase realtime sync, but with a proper relational model and TypeScript end-to-end. The trade-off: smaller ecosystem and you're committed to Convex's execution model. Best for TypeScript-heavy teams that want reactivity without the Firebase Firestore data-shape compromises.
Reactive queries plus types is unreasonably good.
The useQuery hook subscribes to live data with full type inference end-to-end. Refactor a schema field, the app shows compile errors everywhere. This is what Firebase should have been.
Best DX in the BaaS category for TS teams.
No SDK gymnastics. Write a function, get an HTTP endpoint, get a TypeScript-typed React hook. The reactivity primitive saves us a websocket service we'd otherwise build.
Fast for prototypes, less obvious at scale.
I shipped 3 prototypes on Convex in a week. For solo work the velocity is unbeatable. At enterprise scale I'd want to see the cost model maturity.
Methodology
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