Pino

Overview

Pino (current major version 10.x) is a low-overhead Node.js logger. Every call writes one line of JSON with a numeric level, a millisecond time, pid, hostname and your msg, which log aggregators (Datadog, Loki, Elasticsearch, CloudWatch) can parse without extra rules. Pino keeps work in the hot path small: formatting, pretty-printing and shipping are meant to happen outside the request path, in a worker-thread transport or in a separate process that reads stdout.

Companion packages: pino-http (request logging middleware, Express/Koa/Connect style), pino-pretty (human-readable output for development), pino-std-serializers (bundled; serializes err, req, res). Fastify has Pino built in: Fastify({ logger: true }).

Instructions

Step 1: Install

npm install pino pino-http
npm install -D pino-pretty

Step 2: Create one shared logger