Function to start a MemCached span.

Function to start a Mongo span.

Function to start a Redis span.

Middleware returns echo middleware which will trace incoming requests.

TRACING.

Middleware returns negroni.Handler middleware which will trace incoming requests.

WithPropagators specifies propagators to use for extracting information from the HTTP requests.

WithTracerProvider specifies a tracer provider to use for creating a tracer.

Option specifies instrumentation configuration options.