Question 1

How do I set up a basic GraphQL server with Caliban?

Accepted Answer

Define your schema using Scala case classes and traits, then create a RootResolver to wire up resolvers. The documentation provides quick start guides for integrating with web frameworks like http4s or other Scala HTTP libraries.

Question 2

Caliban vs Sangria: which is better for Scala GraphQL?

Accepted Answer

Caliban emphasizes type safety and minimal boilerplate with a code-first approach, ideal for FP projects, while Sangria offers more flexibility and a larger plugin ecosystem. Choose based on your team's familiarity with functional programming and need for ecosystem tools.

Question 3

Does Caliban support GraphQL subscriptions for real-time data?

Accepted Answer

Yes, Caliban supports subscriptions through its integration with reactive streams, but setup may require additional configuration and familiarity with functional streams compared to simpler query and mutation handling.

Question 4

How to handle authentication and authorization in Caliban?

Accepted Answer

Implement middleware or wrap resolvers with ZIO effects to manage security, leveraging Caliban's functional design for composable error handling and context propagation, as detailed in the documentation.

Question 5

What are the performance benchmarks for Caliban compared to other libraries?

Accepted Answer

Caliban is optimized for high performance with pure interfaces, but specific benchmarks vary; consult community resources or the documentation for up-to-date comparisons, as performance depends on use cases and Scala runtime.

Question 6

Can I use Caliban with non-ZIO effect systems like Cats Effect?

Accepted Answer

Caliban is primarily designed for ZIO, and while there might be community efforts for Cats Effect integration, official support is focused on ZIO, so using other effect systems may require extra work or limitations.

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