Caching is nice, but HTTP has a built-in method: conditional GETs. I wrote up a blog post on how to do this with App Engine but it should work generally in Pyth

Caching is nice, but HTTP has a built-in method: conditional GETs. I wrote up a blog post on how to do this with App Engine but it should work generally in Python using urllib2. http://www.hung-truong.com/blog/2010/12/01/conditional-gets-in-app-engine/ http://www.hung-truong.com/blog/2010/12/01/conditional-gets-...