ab-test-setup
FreePlan, design, and implement A/B tests and experiments with statistical rigor. Covers hypothesis frameworks, sample sizing, metrics, and result analysis.
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Distributed tracing con OpenTelemetry: setup Go/TS/React/RN, Cloud Trace, Tempo, Datadog, sampling, correlación con logs.
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See how to installReview the instructions the agent will receive before you install.
Standard Educabot: OTel SDK + OTLP exporter → Google Cloud Trace (prod), Jaeger local (dev). Siempre OTLP para switchear backend sin tocar código.
| Backend | Cuándo |
|---|---|
| Google Cloud Trace | Default (Cloud Run/GKE), factura por span |
| Grafana Tempo | Self-host, budget-conscious, parea con Loki+Grafana |
| Datadog APM | Org con DD enterprise |
| Honeycomb | Debug complejo, high-cardinality BubbleUp |
| Jaeger OSS | Dev local / fallback |
Go (Gin): InitTracing() con Cloud Trace exporter, resource attributes (service.name, deployment.environment), ParentBased(TraceIDRatioBased) sampler, TraceContext+Baggage propagator. Middleware: otelgin.Middleware("service-name"). HTTP client: otelhttp.NewTransport(). DB: otelsql.Open(). Custom span: tracer.Start(ctx, "op") + defer span.End() + span.SetAttributes() + span.RecordError().
Node/TS: NodeSDK con auto-instrumentations (disable fs). Import ANTES que cualquier otro require (--require ./dist/tracing.js). Resource: service.name + environment. Sampler: ParentBased(TraceIDRatioBased(0.1)) prod. Custom span: tracer.startActiveSpan() + try/catch/finally con span.end().
React web: WebTracerProvider + FetchInstrumentation con propagateTraceHeaderCorsUrls. Samplear 1-5% (tráfico browser enorme).
React Native: mismo approach que web, cuidado con bundle size y battery.
HTTP: automático con otelhttp/auto-instrumentation (header traceparent). PubSub/Kafka: inject/extract manual en message attributes con MapCarrier.
| Entorno | Rate | Sampler |
|---|---|---|
| Dev/staging | 100% | AlwaysSample |
| Prod | 10% | TraceIDRatioBased(0.1) + ParentBased |
| Errores/latencia alta | 100% | Tail-based (Collector) |
Tail-based requiere OTel Collector intermedio con policies: errors (status_code ERROR), slow (threshold_ms 1000), random (10%).
Incluir trace_id + span_id en cada log line. Cloud Logging: logging.googleapis.com/trace → link directo en Cloud Trace UI.
span.RecordError(err) + span.SetStatus(codes.Error, msg). Attributes OK: user.id, tenant.id, result.count, http.route. NO: email, password, tokens, contenido libre, responses completas de DB.
Link con Bugsnag: incluir trace_id en metadata del error → saltar desde Bugsnag a Cloud Trace.
span.End() → memory leaklog.Printf("took %dms") en vez de spansNo reviews yet. Tell others what you thought.
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Plan, design, and implement A/B tests and experiments with statistical rigor. Covers hypothesis frameworks, sample sizing, metrics, and result analysis.
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Web/mobile accessibility decision guide: WCAG 2.2 AA, ARIA, keyboard nav, focus management, contrast, testing. Use for: a11y, accessibility, wcag, aria, screen reader, keyboard, contrast.
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Generate, iterate, and scale ad creative for paid advertising across Google, Meta, LinkedIn, and X. Covers platform specs, creative frameworks, and quality validation.
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Design multi-agent systems, create agent architectures, define communication patterns, and build autonomous agent workflows with structured evaluation frameworks.
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Inter-agent communication protocol for C-suite agent teams. Defines invocation syntax, loop prevention, isolation rules, response formats, and quality loops.
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