開発効率を向上させ、相互に接近することを学ぶために Golang で一般的に使用されるライブラリ

package main

import (
    "github.com/gin-gonic/gin"
    "net/http"
)

func main() {
    r := gin.Default()

    r.GET("/hello", func(c *gin.Context) {
        c.JSON(http.StatusOK, gin.H{
            "message": "Hello, world!",
        })
    })

    r.Run(":8080")
}

package main

import (
    "github.com/jinzhu/gorm"
    _ "github.com/jinzhu/gorm/dialects/mysql"
)

type User struct {
    gorm.Model
    Name  string
    Email string
}

func main() {
    db, err := gorm.Open("mysql", "user:password@/dbname?charset=utf8&parseTime=True&loc=Local")
    if err != nil {
        panic("failed to connect database")
    }
    defer db.Close()

    db.AutoMigrate(&User{})

    user := User{
        Name:  "Alice",
        Email: "alice@example.com",
    }

    db.Create(&user)

    var users []User
    db.Find(&users)
}

package main

import (
    "github.com/go-redis/redis"
)

func main() {
    client := redis.NewClient(&redis.Options{
        Addr:     "localhost:6379",
        Password: "",
        DB:       0,
    })

    err := client.Set("key", "value", 0).Err()
    if err != nil {
        panic(err)
    }

    val, err := client.Get("key").Result()
    if err != nil {
        panic(err)
    }
    fmt.Println("key:", val)
}

package main

import (
    "github.com/spf13/viper"
)

func main() {
    viper.SetConfigFile("config.yaml")
    err := viper.ReadInConfig()
    if err != nil {
        panic(err)
    }

    host := viper.GetString("host")
    port := viper.GetInt("port")

    fmt.Printf("Server running on %s:%d
", host, port)
}

package main

import (
    "github.com/sirupsen/logrus"
)

func main() {
    logrus.SetFormatter(&logrus.JSONFormatter{})

    logrus.WithFields(logrus.Fields{
        "animal": "walrus",
        "size":   10,
    }).Info("A group of walrus emerges from the ocean")

    logrus.WithFields(logrus.Fields{
        "omg":    true,
        "number": 122,
    }).Warn("The group's number increased tremendously!")

    logrus.WithFields(logrus.Fields{
        "temperature": -4,
    }).Fatal("The ice breaks!")
}