It is largely the premise for at least the beginning of Speaker for the Dead where the main character lives essentially a digital nomadic life traveling at almo

It is largely the premise for at least the beginning of Speaker for the Dead where the main character lives essentially a digital nomadic life traveling at almost light speed planet-to-planet. He knows he can never go back to any place he's been as everyone died of old age as soon as he left. It has FTL communication though.