Designing API: REST | gRPC | GraphQL, which one should you pick?

Depending on your use cases you may need to access databases with different patterns: CRUD, commands, Streaming, Batches, Asynchronous, Reactive. At DataStax, the developer advocates team implements reference applications for developers. We had the chance to implement multiple approaches and can provide feedback. KillrVideo.com is one of this application, it has been written in 3 languages (Java, C# and Node) and implement API with REST, Grpc and GraphQL. Though live session, browsing real code, you will see implementation details, lessons learnt and get working source code in Github as takeaway.