Tracely — Observability Primitives

Unified observability library for Rust: distributed tracing, metrics, and structured logging in one package.

Crates

Crate	Path	Description
tracely-core	crates/tracely-core	Core observability primitives
tracely-sentinel	crates/tracely-sentinel	Monitoring and alerting

Installation

[dependencies]
tracely-core = { workspace = true }
tracely-sentinel = { workspace = true }

Workspace Note

This workspace combines previously separate observability crates:

• phenoSentinel → merged as tracely-sentinel

Features

• Distributed Tracing: OpenTelemetry-compatible spans
• Metrics: Counters, gauges, histograms
• Structured Logging: Zero-allocation JSON logs
• Exporters: OTLP, Prometheus, Jaeger, Zipkin

Installation

[dependencies]
tracely = { git = "https://github.com/KooshaPari/tracely" }

Usage

use tracely::{tracer, metrics, log};

// Trace
let span = tracer::start("process_request");
defer { span.end(); }

// Metrics
metrics::counter!("requests_total").inc();
metrics::histogram!("request_duration").observe(duration);

// Log
log::info!("Request processed", { "duration_ms": 42 });

Architecture

src/
├── tracing/      # Distributed tracing
├── metrics/      # Metrics collection
├── logging/      # Structured logging
└── exporters/   # OTLP, Prometheus, etc.

License

MIT