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wtf is pino?

zekth/pino — explained in plain English

Analysis updated 2026-07-18 · repo last pushed 2023-01-11

JavaScriptAudience · developerComplexity · 2/5DormantSetup · easy

TL;DR

Pino is a fast, low-overhead logging library for Node.js that writes structured JSON logs without slowing your app down.

Mindmap

mindmap
  root((pino))
    What it does
      Structured JSON logs
      Very low overhead
      Pretty printing option
    Tech stack
      Node.js
      JavaScript
    Use cases
      Track API requests
      Log errors in production
      Send logs to Elasticsearch
    Audience
      Backend developers
    Frameworks
      Express
      Fastify
      Koa

Code map

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filefunction / class

Why would anyone build with this?

REASON 1

Add fast structured logging to a Node.js API to track requests, queries, and errors.

REASON 2

Pipe logs into a monitoring system like Elasticsearch for production observability.

REASON 3

Create child loggers that attach a request ID so related log entries stay grouped together.

REASON 4

Offload log processing to a separate worker thread so it doesn't block your app.

What's in the stack?

Node.jsJavaScript

How it stacks up

zekth/pino3rd-eden/ircb.ioa15n/a15n
LanguageJavaScriptJavaScriptJavaScript
Last pushed2023-01-112016-11-162019-04-07
MaintenanceDormantDormantDormant
Setup difficultyeasyeasyeasy
Complexity2/52/52/5
Audiencedeveloperdevelopergeneral

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · easy Time to first run · 5min

Yoink these prompts

Prompt 1
Show me how to add Pino logging to my Express app to track incoming requests.
Prompt 2
Help me set up a Pino child logger that tags all logs from one request with the same ID.
Prompt 3
Explain how to use Pino's pretty-printer during development versus JSON output in production.
Prompt 4
Write a Pino setup that redacts sensitive fields like passwords from log output.
Prompt 5
Show me how to send Pino's JSON logs to Elasticsearch for monitoring.

Frequently asked questions

wtf is pino?

Pino is a fast, low-overhead logging library for Node.js that writes structured JSON logs without slowing your app down.

What language is pino written in?

Mainly JavaScript. The stack also includes Node.js, JavaScript.

Is pino actively maintained?

Dormant — no commits in 2+ years (last push 2023-01-11).

How hard is pino to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is pino for?

Mainly developer.

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