Too many sesssions in a rails 4 apps

I am building an E-commerce website on ruby on rails from scratch.

Posting the same thing daily is unlikely to get you better responses,
especially on a weekend (and a 3-day holiday weekend in the US).

Option 1. Store the filter values set by the user in the cookies which is
fast.But it might slow down the user's browser.

What exactly do you mean by "slow down the browser"? And what
makes you think that? Have you done any testing of this hypothesis?