Question 1

Is Ballerina GraphQL production-ready?

Accepted Answer

Yes, it's part of the Ballerina Standard Library with spec compliance and CI/CD badges, but it's best suited for teams already committed to the Ballerina ecosystem due to its niche adoption.

Question 2

How to implement GraphQL subscriptions in Ballerina?

Accepted Answer

Use resource functions with the 'subscribe' accessor that return streams, and the library automatically sets up WebSocket endpoints, as detailed in the Subscription Type section of the README.

Question 3

Ballerina GraphQL vs Apollo Server: which should I use?

Accepted Answer

Ballerina GraphQL is ideal for Ballerina projects with native type safety, while Apollo Server is better for Node.js ecosystems with a larger plugin community and more extensive documentation.

Question 4

How does Ballerina GraphQL handle errors?

Accepted Answer

Errors can be returned as part of union types with other returns, and they are logged and sent to clients as GraphQL errors, as shown in the Errors section where invalid IDs trigger error responses.

Question 5

Can I use Ballerina GraphQL with existing databases?

Accepted Answer

Yes, you can integrate it with Ballerina's database connectors, but the README doesn't provide specific examples, so you'll need to rely on Ballerina's broader library documentation.

Question 6

What types does Ballerina GraphQL support?

Accepted Answer

It supports scalar types, records, enums, services, arrays, unions, and nullable returns, with automatic mapping to GraphQL types, as detailed in the Types section with examples for each.

Question 7

Are there performance benchmarks for Ballerina GraphQL?

Accepted Answer

The README doesn't include performance data; performance depends on Ballerina's JVM runtime, so benchmarking in your specific context is recommended for critical applications.

graphql

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