Clearing Browser Cache

I've been helping bloggers maintain their Blogger blogs, and had to remind them of the occasional need to clear browser cache, a few times.

Recently, somebody asked me, point blank

Chuck, how do I clear cache, anyway?

When I tried to answer, I realised that I did not know - I just do it, following the menus by instinct. This strategy does not help me to advise the average blogger, posting in Blogger Help Forum: How Do I?, very effectively.

One of the challenges is that each browser - and different versions of each browser - have different menus and wizards, for every maintenance procedure, and for every different setting.

What we used to call "cache" and "cookies", so long ago, is now called "private data" - and there are multiple selections, varying by browser, for various components of "private data".

With Chrome, you clear private data using the Wrench Icon - Tools - "Clear browsing data" wizard. My selections for clearing are:

• Clear browsing history
• Clear download history
• Empty the cache

I do not select, and recommend not clearing:

• Delete cookies and other site data
• Clear saved passwords

I personally do not select:

• Clear saved form data

With Firefox V3, you clear private data using the Tools - "Clear Recent History" wizard. My selections for clearing are:

• Browsing & Download History
• Cache

I do not select, and recommend not clearing:

• Cookies
• Active Logins
• Site Preferences

I personally do not select:

• Form & Search History

With Internet Explorer V8, you clear private data using the Tools - "Delete Browsing History" wizard. My selections for clearing are:

• Preserve Favourites website data
• Temporary Internet files
• History

I do not select, and recommend not clearing:

• Cookies
• Form data

I personally do not select:

• Passwords
• InPrivateFiltering data (this you may wish to read about)

With Opera V10, you clear private data using the Tools - "Delete Private Data" wizard. My selections for clearing are:

• Delete temporary cookies
• Delete entire cache
• Clear history of visited pages
• Clear history of downloads
• Clear bookmark visited time

I do not select, and recommend not clearing:

• Delete all cookies
• Delete password protected pages and data
• Clear all email account passwords

I personally do not select:

• Clear Password Manager
• Delete persistent storage
• Close all tabs

With Safari V5, you clear private data using the Gear icon - "Reset Safari" wizard. My selections for clearing are:

• Clear history
• Empty the cache
• Clear the Downloads window
• Close all Safari windows

I do not select, and recommend not clearing:

• Remove all cookies
• Remove all website icons
• Remove saved names and passwords

I personally do not select:

• Remove other AutoFill form text
• Reset all location warnings

Firefox appears to distinguish between "Cookies" and "Active Logins". If you examine the IE V8 "Delete Browsing History" screen, you'll note the advice about cookies.

Files stored on your computer by websites to save preferences such as login information.

This makes it appear that the equivalent of "Active Logins" (aka "authenticated sessions", in some of my advice) may be simply part of "cookies", in Chrome and Internet Explorer.

Similar to clearing of "cache" is clearing of "cache, cookies, and active login sessions". You'll also want to know how to enable cookies and scripts.

Remember to restart the browser, after clearing any private data, or changing any settings. And note the possible effects, depending upon your Internet service, of cache outside your browser, which you cannot clear. And finally, consider how all of this fits into the topic of Layered Security - which includes filters in the browser, in add-ons in the browser, in applications on the computer, and in appliances on the network.

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