Back end server for voting feature

Hi there.
Currently, I use Hubspot CMS for show the content of articles.
But I have a feature for saving the voting Up / Down. How could I woking with back end server in Hubspot ?

@minhtong most everything built into the CMS is not write-able from non-HubSpot users. It would be difficult trying to get that to work from within HubSpot without an externsal server. You could create a HubDB table to store the up/down votes but in order to write to it you would need an external server for the authentication process.