Pino

Learn high-performance logging with Pino.

Pino

Pino is a very high-performance logging library and an alternative to Winston. It is much faster than Winston because it writes logs asynchronously and adds minimal overhead. It is preferred in high-traffic systems.

Pino is not built in; install it with npm install pino. Create a logger with const pino = require("pino"); const logger = pino();. Pino writes JSON by default; structured logging is not an option, it is the default. The call logger.info({ user: "Ayşe" }, "Login") is written as JSON. Pino is 3-5 times faster than Winston, but less flexible in formatting. Pino is ideal for high-volume APIs where low latency matters.

Pino vs Winston

Pino and Winston have different design philosophies. Pino is speed-focused and makes JSON the default. Winston is flexibility-focused and supports multiple formats. Which one you choose depends on your needs.

In a high-traffic API where every millisecond matters, Pino is chosen. If you want to write logs to different files in different formats, Winston is more suitable. Pino writes logs as a JSON stream, which makes them easy to parse in search tools. Winston distributes logs to different destinations with transports. Both are mature and popular libraries. The choice depends on the answer to the performance vs flexibility question. Most production systems prefer Pino for speed.

Exercise Create a Pino logger

Import the pino module. Create a logger with const logger = pino(). Log with logger.info("Pino ready").

Show example solution

const pino = require("pino");
const logger = pino();
logger.info("Pino ready");

Test yourself

Complete the Pino logger call

const logger = ____();

Show answer

const logger = pino();

Match each library to its trait

Pino

Speed-focused
Winston

Flexibility-focused
JSON

Pino's default
transport

Winston's concept
What is Pino's default log format?
```
logger.info({ user: "Ayşe" }, "Login")
```
- HTML
- Plain text
- JSON
- XML
Show answer

JSON — Pino writes JSON by default.

Next lesson: Summary - Logging

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