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@datadog/native-metrics

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@datadog/native-metrics

Native metrics collector for libuv and v8


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What is @datadog/native-metrics?

The @datadog/native-metrics package is designed to provide native system metrics for Node.js applications. It allows Datadog users to collect and report metrics such as garbage collection, heap statistics, and other Node.js process-level metrics to the Datadog platform, where they can be visualized and monitored.

What are @datadog/native-metrics's main functionalities?

Garbage Collection Metrics

This feature allows you to monitor garbage collection events in your Node.js application. The event listener logs information about each garbage collection event.

const NativeMetrics = require('@datadog/native-metrics');
const metrics = new NativeMetrics();
metrics.on('gc', (info) => {
  console.log('GC event info:', info);
});

Heap Statistics

This feature provides heap statistics from the V8 engine at regular intervals. It can be used to monitor the memory usage of your Node.js application.

const NativeMetrics = require('@datadog/native-metrics');
const metrics = new NativeMetrics();
setInterval(() => {
  const stats = metrics.getHeapStatistics();
  console.log('Heap stats:', stats);
}, 10000);

Event Loop Lag

This feature measures the lag in the Node.js event loop, which can be an indicator of the application's responsiveness.

const NativeMetrics = require('@datadog/native-metrics');
const metrics = new NativeMetrics();
setInterval(() => {
  const lag = metrics.getLoopDelay();
  console.log('Event loop lag:', lag);
}, 10000);

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Package last updated on 10 May 2023

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