Simple pub/sub messaging for the web
OpenTelemetry metrics SDK
OpenTelemetry Collector Metrics Exporter allows user to send collected metrics to the OpenTelemetry Collector
OpenTelemetry Collector Metrics Exporter allows user to send collected metrics to the OpenTelemetry Collector using protobuf over HTTP
Native metrics collector for libuv and v8
OpenTelemetry Collector Metrics Exporter allows user to send collected metrics to the OpenTelemetry Collector
Client for prometheus
Buffered metrics reporting via the Datadog HTTP API
PM2.io NodeJS APM
A message bus client in Javascript
generate random IDs and avoid collisions
Easily measure performance metrics in JavaScript
Unpack capsize font metrics from fonts
LiveReload JS client - auto reload browser on changes
A module for generating metrics from V8.
OpenTelemetry Exporter Prometheus provides a metrics endpoint for Prometheus
Transform OpenTelemetry SDK data into OTLP
NestJS module for Prometheus
TypeScript definitions for hat
OpenTelemetry Host Metrics for Node.js
Utility functions to calculate mutation testing metrics.
The metrics package for the Powertools for AWS Lambda (TypeScript) library
Prometheus metrics exporter for Fastify
Calculate metrics of a font
rack-metrics is a performance monitoring tool.
Measure queueing metrics for Rack apps
A simple rack app wrapper that gathers request metrics using Coda Hale's metrics library
A rack based middleware that does fun/silly metrics reporting.
Rack middleware to report key app statistics and custom instrumentation to the Librato Metrics service.
gvl_metrics_middlewareprovides Rack and Sidekiq middlewares for GVL metrics
Blackbeard is a Redis backed metrics collection system with a Rack dashboard. It dreams of being a replacement for rollout and split, but is early in its development.
rack middleware to expose leafy metrics/health data as well a ping rack and a thread-dump rack
Extends Yabeda metrics to collect rack-attack metrics
Metrics library for Rack applications using a preforking http server (i.e., Unicorn)
Rack application monitoring with StatsD: reports key performance metrics for apps served via Rack (throughput, response times, error rates, etc).
Object Spy to send Ruby ObjectSpace and Symbol metrics