File size: 787 Bytes
4bbfe8b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | import { LOCALE_HEADER } from "../lib/language"
const statsPageCacheControl = "public, max-age=60, s-maxage=300, stale-while-revalidate=86400"
export function setStatsPageCacheHeaders(headers: Headers | undefined) {
if (!headers) return
headers.set("Cache-Control", statsPageCacheControl)
appendVary(headers, "Accept-Language", "Cookie", LOCALE_HEADER)
}
function appendVary(headers: Headers, ...values: string[]) {
const existing = headers
.get("vary")
?.split(",")
.map((value) => value.trim())
.filter(Boolean)
headers.set(
"vary",
values
.reduce(
(result, value) =>
result.some((item) => item.toLowerCase() === value.toLowerCase()) ? result : [...result, value],
existing ?? [],
)
.join(", "),
)
}
|