Logging

Gin includes a built-in logger middleware that records details about each HTTP request, including the status code, HTTP method, path, and latency.

When you create a router with gin.Default(), the logger middleware is automatically attached along with the recovery middleware:

// Logger and Recovery middleware are already attached
router := gin.Default()

If you need full control over which middleware to use, create a router with gin.New() and add the logger manually:

// No middleware attached
router := gin.New()

// Attach the logger middleware
router.Use(gin.Logger())

The default logger writes to os.Stdout and produces output like this for each request:

[GIN] 2025/06/01 - 15:04:05 | 200 |     512.345µs |       127.0.0.1 | GET      "/ping"

Each entry includes a timestamp, HTTP status code, request latency, client IP, HTTP method, and the requested path.

In this section

• Writing logs to a file — Redirect log output to a file, to the console, or to both at the same time.
• Custom log format — Define your own log format using LoggerWithFormatter.
• Skip logging — Skip logging for specific paths or conditions.
• Controlling log output coloring — Enable or disable colorized log output.
• Avoid logging query strings — Strip query parameters from log output for security and privacy.
• Define format for the log of routes — Customize how registered routes are printed at startup.