Concurrency
Tokio Metrics and Runtime Stats for Production Dashboards
The numbers that tell you a runtime is struggling are queue depth, worker busy time and poll counts. Tokio exposes them, and a small task exports them to Prometheus.
7 min read
Tag
metrics
3 posts
Performance
Profiling Async Rust Services With Tokio Metrics in Steps
Use Tokio runtime and task metrics to see worker busy time, scheduling delay, queue depth and slow polls. Export them, read the numbers that matter and tell blocking code from a genuine lack of capacity.
3 min read
Performance
Tail Latency in Rust Services and Why Averages Mislead You
The average hides the slow requests users remember. Record latency in histograms, read p50, p95 and p99, learn why tails grow with fan-out, and what typically causes them in Rust services.
4 min read