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fix: SWR cache header on Vercel (#10624)

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Hariom Balhara
2023-08-08 13:50:30 +01:00
committed by GitHub
parent 05020dfa9d
commit 4cd8935375
1 changed files with 23 additions and 7 deletions
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packages/trpc/server/createNextApiHandler.ts
+23 -7
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@@ -58,19 +58,35 @@ export function createNextApiHandler(router: AnyRouter, isPublic = false, namesp
if (isPublic && paths) {
const ONE_DAY_IN_SECONDS = 60 * 60 * 24;
const FIVE_MINUTES_IN_SECONDS = 5 * 60;
const cacheRules = {
session: `no-cache`,
i18n: `no-cache`,
// Revalidation time here should be 1 second, per https://github.com/calcom/cal.com/pull/6823#issuecomment-1423215321
"slots.getSchedule": `no-cache`, // FIXME
cityTimezones: `max-age=${ONE_DAY_IN_SECONDS}, stale-while-revalidate`,
"features.map": `max-age=${ONE_DAY_IN_SECONDS}, stale-while-revalidate`, // "map" - Feature Flag Map
session: "no-cache",
// i18n data is user specific and thus should not be cached
i18n: "no-cache",
// FIXME: Using `max-age=1, stale-while-revalidate=60` fails some booking tests.
"slots.getSchedule": `no-cache`,
// Timezones are hardly updated. No need to burden the servers with requests for this by keeping low max-age.
// Keep it cached for a day and then give it 60 seconds more at most to be updated.
cityTimezones: `max-age=${ONE_DAY_IN_SECONDS}, stale-while-revalidate=60`,
// Feature Flags change but it might be okay to have a 5 minute cache to avoid burdening the servers with requests for this.
// Note that feature flags can be used to quickly kill a feature if it's not working as expected. So, we have to keep fresh time lesser than the deployment time atleast
"features.map": `max-age=${FIVE_MINUTES_IN_SECONDS}, stale-while-revalidate=60`, // "map" - Feature Flag Map
} as const;
const prependNamespace = (key: string) =>
(namespace ? `${namespace}.${key}` : key) as keyof typeof cacheRules;
const matchedPath = paths.find((v) => prependNamespace(v) in cacheRules);
if (matchedPath) defaultHeaders.headers["cache-control"] = cacheRules[prependNamespace(matchedPath)];
if (matchedPath) {
const cacheRule = cacheRules[prependNamespace(matchedPath)];
// We must set cdn-cache-control as well to ensure that Vercel doesn't strip stale-while-revalidate
// https://vercel.com/docs/concepts/edge-network/caching#:~:text=If%20you%20set,in%20the%20response.
defaultHeaders.headers["cache-control"] = defaultHeaders.headers["cdn-cache-control"] = cacheRule;
}
}
return defaultHeaders;