Prometheus Metrics

Mimicrab exports Prometheus-compatible metrics to help you monitor the health and performance of your mock server.

Metrics Endpoint

Metrics are available at the following admin endpoint:

GET /_admin/metrics

Available Metrics

Mock Performance

• mimicrab_requests_total: Total number of requests handled.
  • Labels: matched (true/false), path.
• mimicrab_request_duration_seconds: Histogram of request latencies (including Lua execution and Proxying).
  • Labels: path.

Process Metrics (Linux only)

Mimicrab also exports standard process metrics including:

• process_cpu_seconds_total
• process_resident_memory_bytes
• process_virtual_memory_bytes
• process_open_fds
• process_max_fds

Scraping with Prometheus

Add the following job to your prometheus.yml:

scrape_configs:
  - job_name: 'mimicrab'
    metrics_path: '/_admin/metrics'
    static_configs:
      - targets: ['localhost:3000']