RackCache vs Varnish

Head-to-head usage across the sites we track.

Top sites by authority

RackCache · Varnish · 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 · Varnish · share of sites in each country using one or the other

United States 6,090

94,977

Germany 1,600

36,724

France 1,420

32,486

United Kingdom 2,040

31,590

India 1,915

29,464

Canada 2,335

25,078

Netherlands 1,060

25,182

Italy 1,191

22,493

Audience countries from the Chrome UX Report, top markets of either technology.

Real user performance

Median site's p75 values from the Chrome UX Report, Jun 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.

All RackCache sites · All Varnish sites