ADK Java — LLM Observability Overview

Why it matters

LLM observability shapes production quality. Understanding shapes ops.

The architecture

Metrics: SLO tracking.

Logs: prompts + responses.

Traces: full chain.

Evals: quality signals.

How it works end to end

Langfuse: LLM-native traces + evals.

Arize Phoenix: LLM + ML obs.

Datadog LLM Obs.

OTel GenAI as foundation.