Debugging React Server Components in Next.js with OpenTelemetry

React Server Components (RSCs) offer performance benefits but introduce debugging challenges. This article demonstrates using OpenTelemetry, a powerful observability framework, to trace RSC activity within Next.js applications. OpenTelemetry allows tracing requests, collecting metrics, and aggregating logs, giving developers insights into server-side component execution, including lifecycle events, data fetching operations, and rendering performance. A real-world case study showcases optimizing a page loading numerous GitHub API calls using OpenTelemetry. The article details installing necessary packages, creating an instrumentation.js file, and configuring data export destinations. It also explains creating custom spans for more granular insights.