Cache issue - Site is getting refreshed when there is a change even the cache header we have for 2 days

We are maintaining our site in Netlify, and we set the Cache header for 2 days period, If we modify anything in CMS it gets refreshed frequently and the Age in the network tab is getting modified. Why it is refreshing frequently even if we set the cache header? Please provide your suggestions.

We’ve responded to this in the helpdesk.