OpenTelemetry

ELI5 — The Vibe Check

OpenTelemetry is the universal standard for collecting traces, metrics, and logs from your apps. Instead of being locked into Datadog or New Relic's proprietary stuff, OTel gives you one set of SDKs that works with any backend. It's like USB-C for observability.

Real Talk

OpenTelemetry (OTel) is a vendor-neutral, open-source observability framework for generating, collecting, and exporting telemetry data (traces, metrics, logs). It provides APIs, SDKs, and the OTel Collector for processing and routing data to any compatible backend. It merged the OpenTracing and OpenCensus projects under the CNCF.

Show Me The Code

import { trace } from '@opentelemetry/api';

const tracer = trace.getTracer('my-service');
const span = tracer.startSpan('process-order');
try {
  await processOrder(order);
  span.setStatus({ code: SpanStatusCode.OK });
} finally {
  span.end();
}

When You'll Hear This

"We instrumented everything with OpenTelemetry so we can switch observability backends freely." / "OTel auto-instrumentation captures HTTP, database, and gRPC calls without code changes."