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Warm the server cache from client-side navigations, PUBLIC_SSR_WARM opts out

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dtonon 2026-08-20 14:42:48 +01:00
parent 7883e6df8a
commit 5329c611b1
4 changed files with 15 additions and 2 deletions
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src/lib/config.ts
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@ -21,6 +21,11 @@ if (MODE === "simple" && !GROUP_ID) {
// Server-side rendering: opt-in, decided at build time (vite.config.ts bakes
// PUBLIC_SSR in; svelte.config.js picks the matching adapter).
export const SSR_ENABLED = __SQUALK_SSR__;
// With SSR on, a client-side navigation also asks the server for the same
// snapshot (without waiting for it) so the page is already cached for the
// next refresh, shared link or crawler. Costs one server→relay query per
// navigation; opt out with PUBLIC_SSR_WARM=no.
export const SSR_WARM = SSR_ENABLED && env.PUBLIC_SSR_WARM !== "no";
// Server-rendered pages and snapshots are anonymous, so a shared cache may
// hold them: fresh for 5 minutes, served stale for an hour while revalidating.
// Browsers always revalidate (max-age=0) so a login shows its content at once.