feat: cms cache

middlewares/bookingFlow.ts

@@ -2,10 +2,6 @@ import { NextResponse } from "next/server"
 
 import { bookingFlow } from "@/constants/routes/hotelReservation"
 
-import { resolve as resolveEntry } from "@/utils/entry"
-import { findLang } from "@/utils/languages"
-import { removeTrailingSlash } from "@/utils/url"
-
 import { getDefaultRequestHeaders } from "./utils"
 
 import type { NextMiddleware } from "next/server"
@@ -13,8 +9,6 @@ import type { NextMiddleware } from "next/server"
 import type { MiddlewareMatcher } from "@/types/middleware"
 
 export const middleware: NextMiddleware = async (request) => {
-  const { nextUrl } = request
-
   const headers = getDefaultRequestHeaders(request)
   return NextResponse.next({
     request: {

middlewares/cmsContent.ts

@@ -6,7 +6,7 @@ import { resolve as resolveEntry } from "@/utils/entry"
 import { findLang } from "@/utils/languages"
 import { removeTrailingSlash } from "@/utils/url"
 
-import { getDefaultRequestHeaders } from "./utils"
+import { fetchAndCacheEntry, getDefaultRequestHeaders } from "./utils"
 
 import type { NextMiddleware } from "next/server"
 
@@ -21,7 +21,10 @@ export const middleware: NextMiddleware = async (request) => {
   const pathNameWithoutLang = pathWithoutTrailingSlash.replace(`/${lang}`, "")
   const searchParams = new URLSearchParams(request.nextUrl.searchParams)
 
-  const { contentType, uid } = await resolveEntry(pathNameWithoutLang, lang)
+  const { contentType, uid } = await fetchAndCacheEntry(
+    pathNameWithoutLang,
+    lang
+  )
 
   if (!contentType || !uid) {
     throw notFound(

middlewares/myPages.ts

@@ -9,10 +9,9 @@ import {
 import { env } from "@/env/server"
 import { internalServerError, notFound } from "@/server/errors/next"
 
-import { resolve as resolveEntry } from "@/utils/entry"
 import { findLang } from "@/utils/languages"
 
-import { getDefaultRequestHeaders } from "./utils"
+import { fetchAndCacheEntry, getDefaultRequestHeaders } from "./utils"
 
 import type { NextMiddleware } from "next/server"
 
@@ -40,8 +39,11 @@ export const middleware: NextMiddleware = async (request) => {
   }
 
   const pathNameWithoutLang = nextUrl.pathname.replace(`/${lang}`, "")
-  const { uid, contentType } = await resolveEntry(pathNameWithoutLang, lang)
-  if (!uid) {
+  const { uid, contentType } = await fetchAndCacheEntry(
+    pathNameWithoutLang,
+    lang
+  )
+  if (!uid || !contentType) {
     throw notFound(
       `Unable to resolve CMS entry for locale "${lang}": ${pathNameWithoutLang}`
     )

middlewares/utils.ts

@@ -1,5 +1,9 @@
+import { stringify } from "querystring"
+
+import { Lang } from "@/constants/languages"
 import { env } from "@/env/server"
 
+import { resolve as resolveEntry } from "@/utils/entry"
 import { findLang } from "@/utils/languages"
 import { removeTrailingSlash } from "@/utils/url"
 
@@ -31,3 +35,43 @@ export function getDefaultRequestHeaders(request: NextRequest) {
 
   return headers
 }
+
+type ContentStackResponse = {
+  contentType: string | null
+  uid: string | null
+  expiresAt: number
+}
+
+const entryResponseCache: Map<string, ContentStackResponse> = new Map()
+let size: number = 0
+
+export const fetchAndCacheEntry = async (path: string, lang?: Lang) => {
+  const cacheKey = `${path + lang}`
+  const cachedResponse = entryResponseCache.get(cacheKey)
+
+  if (cachedResponse && cachedResponse.expiresAt > Date.now() / 1000) {
+    console.log("[CMS MIDDLEWARE]: CACHE HIT")
+    return cachedResponse
+  }
+
+  if (cachedResponse && cachedResponse.expiresAt < Date.now() / 1000) {
+    console.log("[CMS MIDDLEWARE]: CACHE STALE")
+    size -= JSON.stringify(cachedResponse).length
+    entryResponseCache.delete(cacheKey)
+  } else {
+    console.log("[CMS MIDDLEWARE]: CACHE MISS")
+  }
+
+  const { contentType, uid } = await resolveEntry(path, lang)
+  const expiresAt = Date.now() / 1000 + 3600
+  const entryCache = { contentType, uid, expiresAt }
+  size += JSON.stringify(entryCache).length
+  console.log("[CMS MIDDLEWARE] Adding to cache", entryCache)
+  console.log("[CMS MIDDLEWARE] Cache size (total)", size)
+  entryResponseCache.set(cacheKey, entryCache)
+
+  return {
+    contentType,
+    uid,
+  }
+}

middlewares/webView.ts

@@ -13,7 +13,7 @@ import { decryptData } from "@/utils/aes"
 import { resolve as resolveEntry } from "@/utils/entry"
 import { findLang } from "@/utils/languages"
 
-import { getDefaultRequestHeaders } from "./utils"
+import { fetchAndCacheEntry, getDefaultRequestHeaders } from "./utils"
 
 import type { MiddlewareMatcher } from "@/types/middleware"
 
@@ -64,7 +64,7 @@ export const middleware: NextMiddleware = async (request) => {
 
   const pathNameWithoutLang = nextUrl.pathname.replace(`/${lang}/webview`, "")
 
-  const { uid } = await resolveEntry(pathNameWithoutLang, lang)
+  const { uid } = await fetchAndCacheEntry(pathNameWithoutLang, lang)
   if (!uid) {
     throw notFound(
       `Unable to resolve CMS entry for locale "${lang}": ${pathNameWithoutLang}`