Quick wins for a faster PC:
Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
For an Express app that needs searchable JSON logs correlated by request, start with Pino and pino-http: the middleware provides a logger scoped to each request, and you can reuse or generate a request ID and return it in a response header. Choose Winston when its configurable formats and transports better match your logging destinations. In either case, define a deliberate field schema, keep untrusted input out of top-level log fields, and configure output for the backend that will receive it.
What structured logging and request IDs give you
A structured log is a record of named fields rather than only a sentence. A JSON record can keep an event message, severity, request ID, and application-specific context in separate fields, so a log platform can filter or group by them. A request ID is a correlation handle: it helps locate records associated with one request, but it does not establish who made the request or whether that caller is authorized.
Correlation works only where the application includes the ID. A request logger can attach it to logs created during that request; it does not automatically pass the ID to another service. If downstream services need the same correlation, the application must forward the identifier under an agreed policy.
Recommended Free Tools
Pino vs. Winston for a Node.js application
| Need | Pino | Winston |
|---|---|---|
| JSON output and fields | Emits JSON log records. Child logger bindings add contextual properties to subsequent records. Pino project documentation | Configurable formats include JSON; the package documentation lists info as the default level. Winston package documentation |
| Contextual logging | Child loggers provide a direct way to bind context, and pino-http exposes request-scoped req.log and res.log. pino-http documentation |
Use Winston’s logger configuration and transports to fit the application’s logging setup; request-scoped context requires an application integration or middleware pattern. |
| Destinations and integrations | For processing or shipping logs, Pino recommends handling that work in a separate process or thread. Backend integrations may require destination-specific configuration. | Configurable transports are central to its setup; select and configure them for the required destination. |
| Request middleware | pino-http provides middleware for Express and request-scoped loggers, including a configurable request-ID function. |
The cited package documentation establishes Winston’s logger, formats, and transports, but not a built-in Express request-ID middleware. |
| Google Cloud Logging severity | Google Cloud documents Pino use with an explicit mapping from Pino severity levels to Cloud Logging severities. | Google Cloud documents a Winston integration. Follow the destination’s setup rather than assuming a generic configuration works unchanged. |
| Performance evidence | Pino’s project makes a qualitative performance claim, but the cited material does not establish a dated, independent, apples-to-apples benchmark here. | No directly comparable benchmark result is established by the cited package documentation. |
Express’s production guidance recommends a logging library such as Pino for application activity rather than console.log(). It also distinguishes application activity logging from debugging and warns that console output to terminals or files can be synchronous. That is framework guidance, not an independently verified benchmark ranking. Express production best practices
#1 Best Overall
Add a request ID to every Express request with Pino
Install Pino and its Express middleware in your application, then configure the middleware before routes so those routes can use the request-scoped logger. The following pattern reuses an incoming ID only when your application has a reason to trust it; otherwise it generates a UUID. It also returns the chosen value in X-Request-Id, as supported by pino-http.
- Choose your ID policy. Decide whether an upstream component supplies a trusted request ID. Do not treat an arbitrary client-supplied value as proof of identity or authorization.
- Configure middleware before routes. Use the
genReqIdoption to select a trusted incoming value or generate a UUID. SetX-Request-Idon the response if that matches your API policy. - Use the request logger for request work. In route handlers and functions they call, use the request-scoped logger so its bound context accompanies records.
- Forward context explicitly when needed. If an outbound service call must share the ID, pass it through that call using the header or field agreed with the receiving service.
const express = require('express');
const { randomUUID } = require('node:crypto');
const pinoHttp = require('pino-http');
const app = express();
app.use(pinoHttp({
genReqId(req, res) {
// Reuse this header only if your deployment trusts its source.
const trustedId = req.headers['x-request-id'];
const id = typeof trustedId === 'string' && trustedId.length > 0
? trustedId
: randomUUID();
res.setHeader('X-Request-Id', id);
return id;
}
}));
app.get('/example', (req, res) => {
req.log.info({ event: 'example_loaded' }, 'Example route handled');
res.json({ ok: true });
});The middleware exposes both req.log and res.log. Prefer the request-scoped logger in request-handling code instead of creating unrelated log records that omit request context. Add useful attributes as structured fields; avoid encoding values only inside a free-form message.
Rank #2
Choose fields and protect log data
Set a small, intentional schema: keep request correlation, severity, event name, and relevant application context in predictable fields. Avoid logging request bodies or arbitrary external objects wholesale. Besides exposing data you did not intend to retain, untrusted object keys can collide with logger or application fields in Pino.
- Do not pass user-controlled objects directly to Pino logging methods or child bindings.
- If a value must be recorded, put it under an application-controlled key, such as
input, rather than allowing its keys to become top-level log fields. - Log only the specific attributes needed to understand an event; do not assume a request ID makes other logged data safe.
Pino documents this key-collision risk in its help and troubleshooting guidance.
Rank #3
Send logs to production destinations responsibly
Application logging is not just a choice of logger API; the destination affects configuration and operational behavior. Winston’s formats and transports let teams tailor output to their destinations. Pino emits JSON and recommends keeping log processing—such as sending, reformatting, and alert triggering—off the main event loop in a separate process or thread. Avoid putting avoidable heavy transport work directly in request handling.
For Google Cloud Logging, use the platform’s Node.js setup guidance for the chosen library. Google Cloud documents integrations for Winston and Bunyan; when using Pino, configure an explicit mapping from Pino severity levels to Cloud Logging severities rather than assuming the names align. See Google Cloud’s Node.js logging setup documentation (last updated July 10, 2026).
Quick Recap
Rank #4
Which logger should you choose?
- Choose Pino with
pino-httpwhen you want JSON records, child-logger context, and an established request-scoped Express pattern with request-ID support. - Choose Winston when configurable formats and transports are the better fit for your application’s destinations and existing setup.
- For either choice, validate the emitted fields and severity mapping at the actual destination, keep processing work away from the event loop where practical, and make request-ID trust and forwarding explicit.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
