Description

Implement comprehensive monitoring and logging.

Tasks

• Set up Prometheus metrics
• Add structured logging (JSON)
• Implement distributed tracing
• Create Grafana dashboards
• Add alerting rules
• Track SLO metrics (latency, availability)
• Monitor cache hit ratios

Documentation

• See docs/03-system-architecture.md Section 7 for observability

Acceptance Criteria

• Metrics are exported to Prometheus
• Logs are structured and searchable
• Dashboards show key metrics