Comment 8 for bug 223482

We're using "Cache-Control: public,max-age=86400" for testing on staging.launchpad.net, which results in 1 day between cache revalidation (we'll look at adjusting the revalidation times later).

Note that omitting the Expires header or max-age cache control directive does not mean "don't cache" though: it means that the browser's heuristics take over (usually picking an expiry based on the age of the content).