This is a gist about benchmarking Go Marshaling, Unmarshaling, Encoding and Decoding

benchmarking_test.go

package main

import (
	"encoding/json"
	"fmt"
	"os"
	"strings"
	"testing"
)

type TB testing.B

func BenchmarkMarshaling(b *testing.B) {

	b.StopTimer()

	type Employee struct {
		EmployeeID           int    `json:"employee_id"`
		EmployeeName         string `json:"employee_name"`
		EmployeeEmailAddress string `json:"employee_email_address"`
	}

	employees := []Employee{
		Employee{
			EmployeeID:           1,
			EmployeeName:         "XYZ",
			EmployeeEmailAddress: "xyz@pqr.com",
		},
		Employee{
			EmployeeID:           2,
			EmployeeName:         "ABC",
			EmployeeEmailAddress: "abc@pqr.com",
		},
	}
	b.StartTimer()
	encoder := json.NewEncoder(os.Stdout)
	encoder.Encode(employees)
}

func BenchmarkUnmarshaling(b *testing.B) {
	b.StopTimer()
	jsonData := []byte(`[{"EmployeeID":1,"EmployeeName":"XYZ","EmployeeEmailAddress":"xyz@pqr.com"},{"EmployeeID":2,"EmployeeName":"ABC","EmployeeEmailAddress":"abc@pqr.com"}]`)
	type Employee struct {
		EmployeeID           int
		EmployeeName         string
		EmployeeEmailAddress string
	}

	var employees []Employee
	b.StartTimer()
	err := json.Unmarshal(jsonData, &employees)
	if err != nil {
		fmt.Println("error: ", err)
	}
	//fmt.Printf("%+v", employees)
}

func BenchmarkEncoder(b *testing.B) {
	b.StopTimer()
	type Employee struct {
		EmployeeID           int    `json:"employee_id"`
		EmployeeName         string `json:"employee_name"`
		EmployeeEmailAddress string `json:"employee_email_address"`
	}

	employees := []Employee{
		Employee{
			EmployeeID:           1,
			EmployeeName:         "XYZ",
			EmployeeEmailAddress: "xyz@pqr.com",
		},
		Employee{
			EmployeeID:           2,
			EmployeeName:         "ABC",
			EmployeeEmailAddress: "abc@pqr.com",
		},
	}

	b.StartTimer()
	encoder := json.NewEncoder(os.Stdout)
	encoder.Encode(employees)
}

func BenchmarkDecoder(b *testing.B) {
	b.StopTimer()
	jsonData := `[{"EmployeeID":1,"EmployeeName":"XYZ","EmployeeEmailAddress":"xyz@pqr.com"},{"EmployeeID":2,"EmployeeName":"ABC","EmployeeEmailAddress":"abc@pqr.com"}]`
	type Employee struct {
		EmployeeID           int
		EmployeeName         string
		EmployeeEmailAddress string
	}

	var employees []Employee
	b.StartTimer()
	decoder := json.NewDecoder(strings.NewReader(jsonData))
	if err := decoder.Decode(&employees); err != nil {
		fmt.Println("error:", err)
	}
	//fmt.Printf("%v", employees)
}