How to force clear user's cache/cookies?

Question

Is there any way to force clear users cache and/or cookies? Especially in Safari/Webkit.

Many thanks!

Answer 1

Yes. Trick the user into selecting the appropriate menu item which clears their cookies and cache. I kid! That would be called "social engineering" type of hacking and is inadvisable for those wishing to stay clear of legal troubles.

There are a couple of tags that may be useful, depending on what you want to do:

<META HTTP-EQUIV="PRAGMA" CONTENT="NO-CACHE">
<META HTTP-EQUIV="Refresh" CONTENT=...time>

This only controls your own web page, not the cache in general. Of course, you can set your own site's cookies to whatever you want.