seniorPHP
Explain advanced distributed tracing architecture using OpenTelemetry in PHP microservices.
Updated May 24, 2026
Short answer
Distributed tracing tracks requests across microservices using spans and traces to diagnose latency and failures.
Deep explanation
In distributed PHP systems, a single request spans multiple services, databases, and queues.
OpenTelemetry introduces:
- Trace
End-to-end request journey.
- Span
Individual operation within a trace.
- Context propagation
Passing trace IDs across services.
Architecture components:
- instrumentation layer
- collector
- backend (Jaeger, Tempo)
Key benefits:
- latency breakdown
- dependency mapping
- root cause analysis
Advanced concepts:
- sampling strategies
- tail-based sampling
- baggage propagation
- cross-language tracing…
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