Zipkin Express Instrumentation

Express middleware for distributed tracing with Zipkin.js. Version 0.22.0 is current stable, released as part of the openzipkin/zipkin-js monorepo with irregular release cadence. This package provides middleware that creates Zipkin spans for incoming HTTP requests to Express applications, automatically recording timing, tags, and annotations. Key differentiators: minimal configuration, tight integration with Zipkin's B3 propagation headers, support for custom sampler and tracer configurations. Suitable for Node.js Express apps requiring observability via Zipkin. Note: Not actively maintained (last release 0.22.0).