Observability Platform at Scale - Metrics, Traces, Logs, and Profiles

Goal: Build one observability platform that carries all four pillars at once.

• Metrics: ingest 500 million per second. Counters, gauges, histograms, and summaries.
• Traces: collect per-request call trees across 500K+ services, spanning service boundaries.
• Logs: centralize structured output from every container in the fleet, with full-text search.
• Profiles: profile application performance continuously. CPU, memory, and lock contention snapshots, correlated to traces.

On top of those four, the platform provides real-time dashboards and alerting. Alerting runs on SLO (Service Level Objective) burn rates plus ML-assisted anomaly detection. It also gives you multi-tenant isolation, and long-term retention with automatic downsampling.