Open Telemetry

Introduction

This is a quick page about open telemetry which I came across doing the Effect_TS.

Four things

Four things must ye know about Open Telemetry

• Traces - Spans
• Metrics - Performances, counts etc
• Logs - No Explanation required
• Baggage - contextual information we want to pass from span to span

This is an example of a trace with spans.

Trace: "User logs in"
├── Span: "Frontend sends login request"
├── Span: "API receives request"
│   ├── Span: "Validate credentials"
│   └── Span: "Query user DB"

Other Terms

• OTLP - Open Telemetry Protocol Sent over gRPC or HTTP.
• Collector - Own Service to accept data and push it out
• Instrumentation - How you make the data. Some frameworks like expressJS, effectTS have automatic but you can use a OpenTelemetry SDK