How much frequently Google fetches sitemaps?
I am now working with a high traffic website normally have 30 new posts per minute but currently it provides sitemaps which links to new 100 posts (3 minutes).
Is this method is enough? Is bots fetch sitemaps every 3 minutes?
Did need to change sitemaps to list all 5M posts(indexed sitemaps)? How this change will effect on traffic and PageRank?
Is Googlebot remove URLs that previously listed on sitemaps but not now?