Observability Tools

Sampling strategies for logs and traces to optimize costs while maintaining observability. PROACTIVELY activate for: (1) Configuring trace sampling, (2) Log volume reduction, (3) Head-based vs tail-based sampling, (4) Priority-based sampling, (5) Cost optimization. Triggers: "sampling", "trace sampling", "log sampling", "cost optimization", "head-based", "tail-based", "sample rate"

OpenTelemetry distributed tracing for Next.js 14+ App Router applications. PROACTIVELY activate for: (1) Setting up OpenTelemetry in Next.js, (2) Creating instrumentation.ts, (3) Manual span creation, (4) Client-side tracing, (5) Vercel integration. Triggers: "opentelemetry", "otel", "tracing", "nextjs instrumentation", "rsc trace", "setup-tracing", "span", "tracer"

Sentry integration for error tracking across Next.js, Python, and Firebase. PROACTIVELY activate for: (1) Setting up Sentry SDK, (2) Configuring error boundaries, (3) Adding custom context to errors, (4) Source map configuration, (5) Release tracking. Triggers: "sentry", "error tracking", "error boundary", "exception monitoring", "crash reporting", "source maps"

W3C Trace Context propagation across service boundaries for distributed tracing. PROACTIVELY activate for: (1) Implementing trace context propagation, (2) Cross-service correlation, (3) Setting up traceparent headers, (4) Baggage propagation, (5) Multi-service debugging. Triggers: "distributed tracing", "trace context", "traceparent", "correlation", "span", "baggage", "propagation"

OpenTelemetry instrumentation for Python backend services including FastAPI and Flask. PROACTIVELY activate for: (1) Setting up OpenTelemetry in Python, (2) Auto-instrumenting FastAPI, (3) Creating manual spans, (4) Log correlation with traces, (5) Exporter configuration. Triggers: "opentelemetry python", "otel python", "flask trace", "fastapi trace", "setup-tracing", "python tracing"