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Facebook Adopts Secure Web Pages By Default
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AustinIT
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AustinIT,
User Rank: Apprentice
11/20/2012 | 4:30:18 PM
re: Facebook Adopts Secure Web Pages By Default
SSL encrypts the data "in transit"... not the data at rest. So I disagree with you about the browser not caching pages as being the problem. The main performance hit when using SSL comes from page encryption/decryption activity between the server and client.

If you look at what the browser caches from previous page visits (whether using SSL or not), you will find that it still downloads and caches files from the page(s) (mainly cookies, form data, JS, CSS, and graphics images). The other "changed" content is downloaded and the page is then rendered on the fly. Yes, it is slightly faster to display a page that has certain elements of it cached on the client rather than having to download ALL content again. This depends on the amount of a website's content being JPEG, GIF, PNG, Flash, etc. However, older systems have more of a problem with this than newer and a lot depends on Internet bandwidth as well.

You can blame website designers for the mixed secure/nonsecure content problem. If they are providing SSL services on "their" pages by default, then they should require third party content providers (that they link to) to enable SSL as well if they truly want a secure environment end to end. It is not just an IE browser issue with the warnings you receive about mixed content (secure vs. nonsecure). All browsers should warn about this. At least the IE browser (by default) is letting you know that mixed content could be a problem. Besides, you can turn that warning off if you want (not recommended because how would you otherwise know that some of your traffic is being redirected to a nonsecure site).
ANON1245867212860
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ANON1245867212860,
User Rank: Apprentice
11/20/2012 | 12:31:06 AM
re: Facebook Adopts Secure Web Pages By Default
Don't see how there isn't a performance hit because encrypted pages are not stored by shared caches. Also, by having links on SSL pages to non-SSL URLs, IE9 issues warnings of Gǣinsecure content".


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