Upstash Redis를 사용하는 Lambda의 상태 저장 서버리스

func Handler(ctx context.Context, request events.APIGatewayProxyRequest) (Response, error) {
    // extract hash from API Gateway headers
    hash := request.Headers["hash"]

    // get from Redis compatible Upstash database
    val, err := client.Get(ctx, hash).Result()

    if err == redis.Nil {
        // hash not found
        return Response{
            StatusCode: 404,
            Body:       notFoundResponse,
            Headers:    headers,
        }, nil
    }

    // did find hash
    return Response{
        StatusCode: 200,
        Body:       fmt.Sprintf(redirectResponse, val),
        Headers:    headers,
    }, nil
}