What im trying to do:

Fetch X numbers of RSS Feeds from my Blogs and echo only new entries. My Problem is, how to know wich items are already parsed?

Solution so far:

Fetch the Feed every 5 hours, store all titles inside an Database table or flat file. Next run check if the title is already in database if not print it and save it inside the database.

But iam not sure if this is best practise to do this?

If someone knows a fast way, it would be great. Sorry for my poor english.