APM — Distributed Tracing

• *rea:*Observability
• *ath:*observe/apm (engine) + platform/apm (SaaS)
• *ind:*Distributed tracing / Application Performance Monitoring

Role in the stack

APM is the distributed tracing and performance monitoring layer of Koder. Services emit spans via OTLP, Zipkin, Jaeger or simple JSON; APM stitches them into traces, visualizes them as waterfalls, builds service dependency maps, and computes P50P95P99 latency per service. It is the go-to tool when latency spikes or an error flood appears.

The opencore engine lives in observe/apm; platform/apm is the multitenant SaaS version.

Features

• *ulti-format ingestion*— OTLP (OpenTelemetry), Zipkin v2, Jaeger, and simple JSON
• *aterfall visualization*— Gantt-chart view of all spans in a trace with timing
• *ervice dependency map*— Visual graph of servicetoservice calls with error rates
• *atency analytics*— P50P95P99 percentiles, throughput, error rates per service
• *ultitenant*— Orgbased isolation with API key authentication
• *QLite storage*— Zero-dependency persistence with retention cleanup

Primary couplings