uber-go/zap
Loggingimport "go.uber.org/zap"Blazing fast, structured, leveled logging in Go from Uber.
Example
package main
import "go.uber.org/zap"
func main() {
logger, _ := zap.NewProduction()
defer logger.Sync()
logger.Info("user logged in",
zap.String("username", "alice"),
zap.Int("attempt", 1),
)
}Key Types & Functions
LoggerSugaredLoggerNewProductionNewDevelopmentFieldStringIntAbout uber-go/zap
The uber-go/zap package (imported as go.uber.org/zap) belongs to the Logging category of Go packages. Blazing fast, structured, leveled logging in Go from Uber.
Go's standard library is one of the language's greatest strengths, providing production-ready implementations for networking, cryptography, encoding, I/O, and more. The uber-go/zap package follows Go's philosophy of simplicity and composability — small, focused packages that combine through interfaces like io.Reader and io.Writer.
When using uber-go/zap in production, follow Go best practices: handle errors explicitly, use context for cancellation and timeouts, prefer composition over inheritance, and write table-driven tests. The Go documentation at pkg.go.dev provides comprehensive API references and examples for every exported type and function.