Complete Request Visibility Across Microservices: Implementing Distributed Tracing in NestJS

In distributed microservices architectures, debugging failures requires tracking requests across multiple services and infrastructure components. This guide demonstrates how to implement distributed tracing in NestJS using OpenTelemetry—attaching unique identifiers to each request and propagating them across service boundaries to provide complete visibility into request flows. By instrumenting HTTP calls, database queries, and custom business logic, teams can move from guesswork to data-driven debugging, significantly reducing mean-time-to-resolution for production issues.