Add x-middleware-cache header to allow opt-out from preflight cache

vercel · Dec 23, 2021 · 34bbb3c · 34bbb3c
1 parent a5bc3f3
commit 34bbb3c
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/packages/next/shared/lib/router/router.ts b/packages/next/shared/lib/router/router.ts
@@ -63,6 +63,7 @@ interface NextHistoryState {
 }
 
 interface PreflightData {
+  cache?: string | null
   redirect?: string | null
   refresh?: boolean
   rewrite?: string | null
@@ -1950,14 +1951,15 @@ export default class Router implements BaseRouter {
         }
 
         return {
+          cache: res.headers.get('x-middleware-cache'),
           redirect: res.headers.get('Location'),
           refresh: res.headers.has('x-middleware-refresh'),
           rewrite: res.headers.get('x-middleware-rewrite'),
           ssr: !!res.headers.get('x-middleware-ssr'),
         }
       })
       .then((data) => {
-        if (shouldCache) {
+        if (shouldCache && data.cache !== 'no-cache') {
           this.sde[cacheKey] = data
         }