What Could Go Wrong with a GraphQL Query and Can OpenTelemetry Help?

APIs are the building blocks of our modern world. As the world becomes more interconnected, we need reliable and performant APIs to ensure the best experience for our end users. Many developers are starting to use GraphQL, a query language, and server-side runtime, to provide a monolithic facade on top of their complex microservice architecture. In turn, making their next-generation APIs fast, flexible, and developer-friendly. But using GraphQL also introduces many new challenges when isolating failures and troubleshooting performance issues. Can OpenTelemetry help? How good is OpenTelemetry support for GraphQL right now? What needs to be improved? For the uninitiated, we will give a brief introduction to GraphQL as a technology. Then we will investigate common challenges developers and SREs might encounter when running GraphQL in production. For each of these issues, we will discuss where OpenTelemetry could have helped and what needs to be improved to make it even more valuable for the community.