When should I use a Gauge instead of a Counter?

Use a Counter for values that only increase, such as total requests or errors. Use a Gauge for values that can go both up and down, such as current memory usage or active connections.

What Rust crates are required for this skill?

This skill focuses on using the 'metrics' and 'metrics-exporter-prometheus' crates to provide standardized instrumentation and exporting capabilities.

Can I integrate these metrics with a web framework like Axum?

Yes, the skill includes specific implementation patterns for creating a /metrics HTTP endpoint using Axum and a Prometheus handle.

Does this skill follow Prometheus naming conventions?

Yes, the skill encourages the use of consistent naming patterns following the 'namespace_name_unit' convention for better compatibility with monitoring tools.

Rust Metrics & Observability

Name: Rust Metrics & Observability
Author: gar-ai

bygar-ai

•

Analytics & Monitoring

Implements production-grade Prometheus metrics in Rust applications using counters, gauges, and histograms for comprehensive system monitoring.

This skill provides specialized guidance for integrating observability into Rust projects using the metrics and metrics-exporter-prometheus crates. It enables developers to quickly set up Prometheus-compatible exporters, implement various metric types like counters for request tracking and histograms for latency distribution, and follow best practices for metric naming and labeling. It is particularly useful for building production-ready services that require real-time monitoring, alerting, and dashboarding via tools like Grafana.

Key Features

01Counter, Gauge, and Histogram implementation patterns

02Integration examples for Axum and HTTP servers

03Metric descriptions with unit-of-measure support

041 GitHub stars

05Prometheus-compatible exporter initialization

06Thread-safe metrics struct patterns

Use Cases

01Instrumenting background workers to monitor queue depth and processing rates

02Monitoring web server request latencies and HTTP status codes

03Tracking system resource utilization such as GPU VRAM and memory usage

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add gar-ai/mallorn rust-observability-metrics

For use in Claude.ai and ChatGPT

Download Skill