진은 무슨 뜻인가요?

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

package main
 
import (
    "github.com/gin-gonic/gin"
    "net/http"
)
 
func getQuery(context *gin.Context){
 
    userid := context.Query("userid")
    username := context.Query("username")
 
    context.String(http.StatusOK,userid+" "+username)
}
func main(){
    // 注册一个默认路由器
    router := gin.Default()
 
    //注册GET处理
    router.GET("/user", getQuery)
 
    //默认8080端口
    router.Run(":8088")
}

package main
 
import (
    "github.com/gin-gonic/gin"
    "net/http"
)
 
func getParam(context *gin.Context){
 
    userid := context.Param("userid")
    username := context.Param("username")
 
    context.String(http.StatusOK,userid+" "+username)
}
func main(){
    // 注册一个默认路由器
    router := gin.Default()
 
    //注册GET处理
    //router.GET("/user", getQuery)
    router.GET("/user/:userid/:username",getParam)
    //默认8080端口
    router.Run(":8088")
}