feat: add Prometheus metrics endpoint #199
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Add OpenTelemetry-based Prometheus metrics for performance monitoring. Metrics are disabled by default and can be enabled via METRICS_ENABLED=true. Metrics exposed: - http_requests_total: Total HTTP requests by method/route/status - http_request_duration_seconds: Request latency histogram - cache_operations_total: Cache hit/miss/create operations - storage_operations_total: Storage adapter operations - storage_operation_duration_seconds: Storage operation latency - db_queries_total: Database query count by table - db_query_duration_seconds: Query latency histogram Closes falcondev-oss#72 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Add application-level byte transfer tracking for uploads and downloads with comprehensive Grafana dashboard visualization. Changes: - Add cache_bytes_uploaded_total and cache_bytes_downloaded_total metrics - Instrument upload/download paths with byte counting transforms - Add new "Data Transfer" dashboard section with 7 panels - Update Container Resources row (collapsed by default) The implementation uses Transform streams to accurately count bytes across all storage adapters (S3, GCS, filesystem) without double-counting. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
- Fix import order in storage.ts (type imports first) - Apply Prettier formatting to storage.ts and dashboard.json Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Add OpenTelemetry-based Prometheus metrics for performance monitoring. Metrics are disabled by default and can be enabled via METRICS_ENABLED=true.
Metrics exposed:
Closes #72
Note
Completely written by Claude Opus 4.5 using Claude Code v2.1.29