How to collect Values from other servers using Memory Store Service?

Hello,
I am fairly new to Memory store service and came here if anyone could help me out. I am trying to use one server that would send a signal to the other servers, collect all the new votes for an item, and bring those new votes to the original server and save them with DataStore. I am doing this to prevent servers from overwriting votes if they are updated at the same time.

Thanks!