ocaml-graphql-server

Schemas are validated at compile time using OCaml's type system, ensuring field types, arguments, and resolvers are consistent, as highlighted in the design principles where only valid schemas pass the type checker.

Provides IO-agnostic core with dedicated Lwt and Async modules, allowing seamless integration with different concurrency models without vendor lock-in, as shown in the separate graphql-lwt and graphql-async packages.

Includes built-in support for GraphQL subscriptions with examples for Lwt-based streams, enabling real-time data updates in applications.

Uses Menhir for query parsing with no external dependencies, reducing bloat and ensuring portability across OCaml environments.