GET Request node

Hi folks. I have a problem with GET request node.

Maybe i do something wrong. Here is an situation:

1. I try to load JSON file by using GET request. It loads data

2. After data updated in server for existing rows or added new one GET request doesnt work properly- sometime it doesnt retrive data, somtimes it retrives, sometimes it retrievs previous version of data. It looks like there is some problem with cache.

Interesting, i do the same staff with Excell and it works fine.

can you help me with it ?

Thansk