RackCache vs WordPress Super Cache
Head-to-head usage across the sites we track.
Top sites by authority
RackCache · WordPress Super Cache · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
RackCache · WordPress Super Cache · share of sites in each country using one or the other
United States
5,155
29,045
Germany
1,371
15,252
France
1,111
14,824
Japan
1,296
11,578
Spain
985
11,577
Italy
976
11,431
United Kingdom
1,668
10,492
India
1,631
9,873
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | RackCache | WordPress Super Cache |
|---|---|---|
| LCP | 2 s | 2.2 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 900 ms | 1200 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
RackCache to WordPress Super Cache
| Domain | When |
|---|---|
| gidedental.com | Oct 2025 |