Design an Internal Metrics Ingestion Service

Design Overview This service accepts time-series metrics from applications and infrastructure, makes them durable, and serves them back for dashboards, alerting, and ad hoc analysis. The design separates the write path from the read path so that heavy ingestion never quenches query latency, and heavy querying never blocks ingestion. Data Model Every metric is normalized to the same shape before it enters the system: This model flows through every component unchanged, except…