db, err := sql.Open("driver-name", "database=test1")
	if err != nil {
		// This will not be a connection error, but a DSN parse error or
		// another initialization error.
		log.Fatal(err)
	}
	db.SetConnMaxLifetime(0)
	db.SetMaxIdleConns(50)
	db.SetMaxOpenConns(50)

	s := &Service{db: db}

	http.ListenAndServe(":8080", s)
}

type Service struct {
	db *sql.DB
}