How to Connect to DynamoDB from Go

Use the AWS SDK for Go v2 to create a DynamoDB client with your region and credentials, then call GetItem to retrieve data.

package main

import (
	"context"
	"fmt"
	"log"

	"github.com/aws/aws-sdk-go-v2/config"
	"github.com/aws/aws-sdk-go-v2/service/dynamodb"
	"github.com/aws/aws-sdk-go-v2/service/dynamodb/types"
)

func main() {
	cfg, err := config.LoadDefaultConfig(context.TODO())
	if err != nil {
		log.Fatalf("unable to load SDK config: %v", err)
	}

	client := dynamodb.NewFromConfig(cfg)

	input := &dynamodb.GetItemInput{
		TableName: aws.String("MyTable"),
		Key: map[string]types.AttributeValue{
			"pk": &types.StringValue{Value: "user123"},
		},
	}

	result, err := client.GetItem(context.TODO(), input)
	if err != nil {
		log.Fatalf("unable to get item: %v", err)
	}

	fmt.Printf("Item: %+v\n", result.Item)
}

Note: Add "github.com/aws/aws-sdk-go-v2/aws" to imports for aws.String.

Connecting to DynamoDB from Go links your program to Amazon's fast database for storing and retrieving data. It's like opening a door to a specific storage room in the cloud so your app can read or write information instantly. You use this whenever your application needs to save user profiles, product catalogs, or session data without managing a server.