As title says FAB.com is writing large amount of data to localstorage which in turn written to disk by browser. Unless of course if you are not trying to damage my SSD, this doesn’t seem the good behavior. It will damage the disk in long run.
I’m not sure what is the purpose of this data, but I’m almost positive it is not needed to be in local storage for the website to work correctly. It could be just a javascript variable or instead of being written every second, write it to localstorage every 5 minutes or even more.
I deleted the data and it was written immediately again.
The following video is recorded in realtime and frame rate is 2FPS (actual time) press play button below (bottom right) to play it

name of the variable as visible in the screen is hcap_uj_e