W3 Total Cache questions

Inside W3 Total Cache (W3TC), on the General Settings area, I clicked on the “Compatibility Test” button and was returned these results:

Legend
Installed: Functionality will work properly
Not detected: May be installed, but cannot be automatically confirmed
Ok: Current value is acceptable.
Yes/No: The value was successful detected.

Can someone enlighten me a bit on the “not detected” part?

I am quite new at this. I am using WP 3.1.3, Polished theme from Elegant Themes, W3 Total Cache 0.9.2.3, WordPress SEO 0.4.2, on a Windows 7 x64 machine and have shared hosting using Linux/Apache. Page Speed in Chrome is 80. Page load time: 12 seconds. doctorEQ.com and am currently hidden from search engine spiders.

TIA

doctorEQ

Within the plugin W3 Total Cache Browser Cache settings, there are three places for selecting options from a drop-down box. I seek help understanding what they mean, the implications, the terms like: ‘max age’ ‘validation’ ‘public’, so that I can make the right selection. I did find that changing each of these three from “cache with max age (max-age=EXPIRED…)” to “cache with validation public, must revalidate, proxy-revalidate” did wonders for my Page Speed time in Chrome. (speed score went from 50 to 80)

The choices are:

cache (“public”)
cache with validation (“public, must-revalidate, proxy-revalidate”)
cache without revalidate (“private, must-revalidate”)
cache with max-age (“Max-age+EXPIRES_SECONDS, public, must-revalidate, proxy revalidate”)
no-cache (“max-age=0, private, no-store, no-cache, must-revalidate”)

Even pointing me to a video or documentation will be greatly appreciated.

Help?

I am quite new at this. I am using WP 3.1.3, Polished theme from Elegant Themes, W3 Total Cache 0.9.2.3, WordPress SEO 0.4.2, on a Windows 7 x64 machine and have shared hosting using Linux/Apache. Page Speed in Chrome is 80. Page load time: 12 seconds. doctorEQ.com and am currently hidden from spiders.

TIA

doctorEQ

Can someone help me understand this “Cache Preload” setting? (So I can decide what’s the best option). It’s found with the W3 Total Cache plugin on the Page Cache tab in the Cache Preload section.

Automatically prime the page cache

There are also two other options there which I don’t understand, both have fields to enter a number. I know there’s an explanation in italics, I just don’t ‘get it.’ I’ll list the defaults:

Update interval >900< seconds (The number of seconds to wait before creating another set of cached pages.)

Pages per interval: >10< (Limit the number of pages to create per batch. Fewer pages may be better for under-powered servers.)

I am quite new at this. I am using WP 3.1.3, Polished theme from Elegant Themes, W3 Total Cache 0.9.2.3, WordPress SEO 0.4.2, on a Windows 7 x64 machine and have shared hosting using Linux/Apache. Page Speed in Chrome is 80. Page load time: 12 seconds. doctorEQ.com and am currently hidden from spiders.

TIA

doctorEQ