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 5,155

85,897

Germany 1,371

32,786

United Kingdom 1,668

27,738

India 1,631

26,616

France 1,111

26,979

Canada 1,933

21,857

Netherlands 852

21,806

Italy 976

19,616

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, 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.

All RackCache sites · All Varnish sites