What is diagnostic-channel-publishers?
The diagnostic-channel-publishers npm package provides a way to publish diagnostic data from various popular Node.js modules. It allows you to instrument your application to collect telemetry data, which can be useful for monitoring, debugging, and performance analysis.
What are diagnostic-channel-publishers's main functionalities?
HTTP Request Monitoring
This feature allows you to monitor HTTP requests made by your Node.js application. The code sample demonstrates how to enable HTTP request monitoring and subscribe to the 'http' channel to log the details of each request.
const { channel } = require('diagnostic-channel');
const { enable } = require('diagnostic-channel-publishers').http;
enable();
channel.subscribe('http', (message) => {
console.log('HTTP request:', message);
});
MongoDB Query Monitoring
This feature allows you to monitor MongoDB queries executed by your Node.js application. The code sample shows how to enable MongoDB query monitoring and subscribe to the 'mongodb' channel to log the details of each query.
const { channel } = require('diagnostic-channel');
const { enable } = require('diagnostic-channel-publishers').mongodb;
enable();
channel.subscribe('mongodb', (message) => {
console.log('MongoDB query:', message);
});
Redis Command Monitoring
This feature allows you to monitor Redis commands executed by your Node.js application. The code sample demonstrates how to enable Redis command monitoring and subscribe to the 'redis' channel to log the details of each command.
const { channel } = require('diagnostic-channel');
const { enable } = require('diagnostic-channel-publishers').redis;
enable();
channel.subscribe('redis', (message) => {
console.log('Redis command:', message);
});
Other packages similar to diagnostic-channel-publishers
winston
Winston is a versatile logging library for Node.js that allows you to log messages to various transports (e.g., console, file, HTTP). While it does not provide the same level of automatic instrumentation as diagnostic-channel-publishers, it is highly configurable and can be used to log diagnostic data manually.
bunyan
Bunyan is another logging library for Node.js that focuses on structured logging. It provides a simple API for logging messages and supports various output formats. Like Winston, it does not offer automatic instrumentation but can be used to log diagnostic data manually.