Introducing OpenTelemetry observability for Crystal

Crystal is an object-oriented programming language influenced by Ruby, with some features from Go and other languages, which is increasingly being used by enterprise companies for core systems. Despite its growing use, observability platforms have not extensively integrated with Crystal, creating a need for solutions to monitor and troubleshoot these systems. The article explores how to instrument Crystal applications using New Relic and OpenTelemetry, providing a detailed guide on configuring these tools to monitor the performance of applications, such as a basic Fibonacci number calculator service. It explains how to set up OpenTelemetry to send data to New Relic, emphasizing the importance of tracing and logging to capture detailed metadata about application processes. The piece also touches on the ongoing development of Crystal's OpenTelemetry support and encourages users to explore further resources for deeper understanding and implementation of observability strategies.