What is a telemetry pipeline, and why might you put one in front of your backends? [Advanced]
Answer
A telemetry pipeline receives, processes, filters, enriches, samples, routes, and exports observability data before it reaches backends. I put one in front of backends to control cost, quality, security, routing, and vendor flexibility.
Technical explanation
Pipelines can drop noisy data, redact sensitive fields, normalize attributes, and enforce tenant quotas.
They decouple instrumentation from backend choice by supporting multiple exporters.
OpenTelemetry Collector is a common vendor-neutral pipeline component.
Hands-on example
Example: apps send OTLP traces, metrics, and logs to an OpenTelemetry Collector gateway. Processors add environment and team tags, redact PII, sample traces, drop debug logs in prod, then export metrics to Prometheus remote write/Mimir, logs to Splunk, and traces to Tempo or a vendor APM.
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