Developer compares four backend options for GDPR-compliant notification metrics

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A developer outlines a method for selecting a backend for a customer-support notification service. They compare four specific paths: AWS CloudWatch, Grafana Cloud, PostHog, and a self-hosted metrics API. The core recommendation is to prioritize a clear data attribution model that distinguishes logical deliveries from retry attempts. The analysis emphasizes controlling label cardinality to manage costs and ensure GDPR compliance, rather than choosing based on advertised pricing. The goal is to select a system whose operational burden fits the team while preserving responsibility without exposing customer data.

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