Question 1

How to implement GraphQL subscriptions in Ballerina?

Accepted Answer

Use resource functions with the 'subscribe' accessor that return a stream, and the library automatically creates a WebSocket endpoint for real-time data, as explained in the subscription type section.

Question 2

Ballerina GraphQL vs Apollo Server: which is better?

Accepted Answer

Ballerina GraphQL is best if you're committed to Ballerina for its network programming features; Apollo Server in Node.js offers a larger ecosystem, more plugins, and broader community support.

Question 3

Can I use Ballerina GraphQL with existing REST APIs?

Accepted Answer

Yes, you can wrap or migrate REST logic by defining Ballerina services that expose GraphQL endpoints, but it requires rewriting code in Ballerina syntax rather than seamless integration.

Question 4

What error handling does Ballerina GraphQL support?

Accepted Answer

Resolvers can return errors in unions, which are mapped to GraphQL error responses with messages and locations, as demonstrated in the errors section of the README.

Question 5

Is Ballerina GraphQL production-ready for high traffic?

Accepted Answer

It leverages Ballerina's concurrency model for efficiency, but performance should be benchmarked against alternatives, and the niche ecosystem might lack optimization tools.

Question 6

How to add authentication to a Ballerina GraphQL API?

Accepted Answer

The README doesn't cover authentication directly; you'd need to use Ballerina's HTTP modules or custom middleware, which may require manual implementation.

Ballerina GraphQL Examples

What is Ballerina GraphQL Examples?

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