Simple Key Generation (using base62 encoded hash) for Tiny URL in Go (GoLang).

tinyURL.go

package tinuURL

import (
	"crypto/md5"
	"fmt"
	"time"

	"github.com/google/uuid"
	"github.com/jxskiss/base62"
)

// GenerateKey generates a new tiny URL key (string)
// by hashing the string (md5) and encoding the hash in base62.
//
// Example: https://go.dev/play/p/tidujUBZ3sY
func GenerateKey(str string, size int) string {
	hash := md5.Sum([]byte(str))
	encodedHash := base62.Encode([]byte(hash[:]))
	return string(encodedHash[:size])
}