Introduction to common log libraries in Golang
Golang commonly used log libraries include "log package", "go-logging" and "zap": 1. log package, built-in Go language, can perform basic logging and output; 2. go -logging, a powerful, flexible and easy-to-use log library that supports multiple formats of log output and level control; 3. zap, Uber’s open source high-performance log library, features structured logging and high customization.
# Operating system for this tutorial: Windows 10 system, Dell G3 computer.
There are several commonly used log libraries in the Go language. I will introduce a few of them below:
-
log package:
- The built-in log package in the Go language provides simple logging functions for basic logging and output.
- Sample code:
package main import ( "log" ) func main() { log.Println("这是一条普通日志") log.Fatalf("这是一条严重错误日志:%s", "错误信息") }
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go-logging:
- go-logging is a powerful, flexible and easy-to-use A log library that supports multiple formats of log output and level control.
- Sample code:
package main import ( "github.com/op/go-logging" "os" ) var log = logging.MustGetLogger("example") func main() { backend := logging.NewLogBackend(os.Stderr, "", 0) backendFormatter := logging.NewBackendFormatter(backend, logging.MustStringFormatter(`%{time:2006-01-02 15:04:05} %{level:.4s} %{message}`)) logging.SetBackend(backendFormatter)log.Info("这是一条普通日志") log.Errorf("这是一条错误日志:%s", "错误信息")}
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zap:
- zap is Uber’s open source high-performance log library with structured logs Recording and highly customizable features.
- Sample code:
package main import ( "go.uber.org/zap" ) func main() { logger, _ := zap.NewProduction() defer logger.Sync()logger.Info("这是一条普通日志") logger.Error("这是一条错误日志", zap.String("err", "错误信息"))}
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The above only introduces a few commonly used log libraries, and there are other log libraries worth mentioning, such as logrus, seelog etc. When choosing a log library that suits your project needs, you need to consider factors such as performance, functionality, ease of use, and community support.
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