Customer.io Observability

Output

• Bounded metrics and redacted traces for event acceptance, campaign delivery, errors, latency, and rate-limit headroom.
• An owned alert/runbook path for delivery, authentication, data-quality, and provider incidents.

Examples

Emit an aggregate counter for accepted events and failures by environment and endpoint, never by email address, customer ID, message body, API key, or full payload. Trigger a staging alert with a harmless test event, verify the on-call route, then restore the normal state and record the alert receipt.

Overview

Implement comprehensive observability for Customer.io integrations: Prometheus metrics (latency, error rates, delivery funnel), structured JSON logging with PII redaction, OpenTelemetry tracing, and Grafana dashboard definitions.

Prerequisites

• Customer.io integration deployed
• Prometheus + Grafana (or compatible metrics stack)
• Structured logging system (pino recommended)