Metrics Monitoring: System Design #

• Metrics Monitoring: System Design — structured design using the delivery framework: requirements, capacity, TSDB storage (Head, WAL, XOR chunk encoding), inverted index (MemPostings, VictoriaMetrics mergeset), scrape engine, PromQL query execution, cardinality problem, OTel Collector pipeline (OTLP), alerting state machine, and long-term storage (Thanos vs VictoriaMetrics). Grounded in Prometheus, VictoriaMetrics, and OpenTelemetry Collector source code.