What is the difference between https://www.google-analytics.com/ga.js and https://ssl.google-analytics.com/ga.js?

Question

I'm optimizing my external Google Analytics script and now I'm wondering:

Is there a difference between https://www.google-analytics.com/ga.js and https://ssl.google-analytics.com/ga.js?

Answer 1

No, ssl.google-analytics.com is just a mirror for www.google-analytics.com. The only difference is that Google Chrome redirects ssl.google-analytics.com to https:// if you connect from HTTP.