OpenTelemetry Part 1: Sinatra

OpenTelemetry (aka OTel) is becoming the standard for distributed tracing. This is the first in a multi-part series where I will document my trials, tribulations, and successes along the road of using OTel to instrument multiple applications. The first few are all ruby applications and some that I hope to be able to do later are written in Java. My goal is to instrument the applications using one or more standards-compliant libraries and then send the spans to an OTel collector. The OpenTelemetry collector will then send them on to one or more backends such as Jaeger, Lightstep, and/or Datadog.