I recently bought a small-sized linux hosting plan from a reseller. What I've noticed is that when I update a file over ftp, the output of my site is not updated right away, and it takes about 10 minutes or more for it to get updated. Web site is hosted on a Linux machine (or VPS, I'm not sure, and I don't know how to check it) and I have access to Plesk control panel.
How can I know where the problem is? If I decide to change my hosting plan, how can I make sure I'm not going to have the same problem?