perf: optimize public content caching

src/app/(payload)/admin/_components/admin-cache-actions.ts

@@ -1,7 +1,8 @@
 'use server'
 
-import { revalidatePath } from 'next/cache'
+import { revalidatePath, revalidateTag } from 'next/cache'
 import { redirect } from 'next/navigation'
+import { CMS_CACHE_TAG } from '@/lib/cms-cache'
 
 const CACHE_PATHS = [
   '/sitemap.xml',
@@ -45,6 +46,8 @@ function normalizeReturnPath(value: FormDataEntryValue | null) {
 export async function clearFrontendCache(formData: FormData) {
   const returnTo = normalizeReturnPath(formData.get('returnTo'))
 
+  revalidateTag(CMS_CACHE_TAG)
+
   for (const path of CACHE_PATHS) {
     revalidatePath(path)
   }
@@ -59,6 +62,7 @@ export async function clearFrontendCache(formData: FormData) {
 export async function refreshSitemapCache(formData: FormData) {
   const returnTo = normalizeReturnPath(formData.get('returnTo'))
 
+  revalidateTag(CMS_CACHE_TAG)
   revalidatePath('/sitemap.xml')
 
   redirect(`${returnTo}${returnTo.includes('?') ? '&' : '?'}sitemap=refreshed`)