Golang Program to generate GUID or UUID with example

In this tutorial, Learned about how to generate GUID in golang with go.uuid and google.uuid packages.

a unique identifier is a unique string to represent information in software applications.

Two types of unique identifiers are used in applications.

• UUID - universally unique identifier,
• GUID - globally unique identifier

These are used in the database for columns to act as the primary key in MongoDB or SQL database. And also you can store cookies or session-id in front-end applications.

UUID or GUID is alias both refer same and contains 16 bytes or 128 bits in size separated in 5 groups by hyphens.

You can check my previous posts.

• How to Generate GUID, UUID, UDID in javascript.
• How to generate GUID in java
• React GUID generate
• Angular GUID generate

There are multiple ways we can generate unique identifiers in the Go language

In this example, We are going to use the google/uuid package to generate uuid

Generate UUID in Go language

Install the package

go get github.com/google/uuid

Here is an example program to generate UUID in the go language

package main

import (
  "fmt"
    "github.com/google/uuid"
)

func main() {
    uuidValue := uuid.New()
  fmt.Println("%s", uuidValue)
}

And the output

ce547c40-acf9-11e6-80f5-76304dec7eb7

Generate UUID in Go language

Install the package

go get github.com/google/uuid

Here is an example program to generate UUID in the go language

package main

import (
  "fmt"
    "github.com/google/uuid"
)

func main() {
    uuidValue := uuid.New()
  fmt.Println("%s", uuidValue)
}

And the output

ce547c40-acf9-11e6-80f5-76304dec7eb7

Generate all versions of UUID in Go Language

go.uuid package is popular for generate UUID with all v1,v2,v3,v4,v5 versions.

Next, Command line, install a package with the below command

go get github.com/satori/go.uuid

Example program to generate all versions of UUID in golang

package main

import (
  "fmt"
  "github.com/satori/go.uuid"
)

func main() {
    v1value, err := uuid.NewV1()
    fmt.Println("%s", myuuid)

    v2value, err := uuid.NewV2()
    fmt.Println("%s", v2value)
    
    v3value, err := uuid.NewV3()
    fmt.Println("%s", v3value)
    
    v4value, err := uuid.NewV4()
    fmt.Println("%s", v3value)
    
    v5value, err := uuid.NewV5()
    fmt.Println("%s", v4value)
}

Output

8e6a0a6b-895d-4a06-80b4-1f59e3be595e
bade98bd-c2b0-4430-9038-0196c7f16dfc
e2f35db9-11b3-4353-aa7c-1f578bd142e6
b351ec0c-5c93-4474-9c31-ad13b0960b97
e1e2c956-7f42-4e4d-bcea-47ca6ee19e9e