refactor. LRU 캐시를 사용하여 API 응답 데이터 캐싱 로직 개선

layers/middleware/pageData.global.ts

@@ -1,3 +1,4 @@
+import { LRUCache } from 'lru-cache'
 import { usePageDataStore } from '#layers/stores/usePageDataStore'
 import { useLoadingStore } from '#layers/stores/useLoadingStore'
 import { commonFetch } from '#layers/utils/apiUtil'
@@ -5,6 +6,12 @@ import { getGameDomain, getPathAfterLanguage } from '#layers/utils/urlUtil'
 import { DEFAULT_LOCALE_CODE } from '@/i18n.config'
 import type { PageDataResponse } from '#layers/types/api/pageData'
 
+/** 페이지 데이터 API 응답 LRU */
+const pageDataResponseCache = new LRUCache<string, PageDataResponse>({
+  max: 100,
+  ttl: 1000 * 60,
+})
+
 export default defineNuxtRouteMiddleware(async (to, _from) => {
   const runtimeConfig = useRuntimeConfig()
 
@@ -64,9 +71,18 @@ export default defineNuxtRouteMiddleware(async (to, _from) => {
       }
     }
 
-    pageDataResponse = (await commonFetch('GET', apiUrl, {
-      query: queryParams,
-    })) as PageDataResponse | null
+    const cacheKey = `${apiUrl}:${JSON.stringify(queryParams)}`
+    const cached = pageDataResponseCache.get(cacheKey)
+    if (cached) {
+      pageDataResponse = cached
+    } else {
+      pageDataResponse = (await commonFetch('GET', apiUrl, {
+        query: queryParams,
+      })) as PageDataResponse | null
+      if (pageDataResponse?.code === 0 && 'value' in pageDataResponse) {
+        pageDataResponseCache.set(cacheKey, pageDataResponse)
+      }
+    }
 
     console.log('🚀 ~ pageData.global response:', pageDataResponse)
   } catch (error) {
@@ -119,7 +135,7 @@ export default defineNuxtRouteMiddleware(async (to, _from) => {
           })
         )
       }
-      return navigateTo(`/${currentLangCode}/home`)
+      return navigateTo(`/${currentLangCode}/home`, { external: true })
     }
 
     // [TODO]

layers/server/middleware/gameData.ts

@@ -61,11 +61,16 @@ function setCacheHeaders(
   event.node.res.setHeader('Cache-Control', cacheControl)
 }
 
-const cache = new LRUCache<string, WebInspectionData>({
+const inspectionDataCache = new LRUCache<string, WebInspectionData>({
   max: 100, // 캐시에 저장할 최대 항목 수
   ttl: 1000 * 30, // 30초 동안 캐시 유지
 })
 
+const gameDataResponseCache = new LRUCache<string, GameDataResponse>({
+  max: 100,
+  ttl: 1000 * 60, // 60초
+})
+
 /**
  * Locale Middleware 역할 함수
  * URL의 언어 코드를 최종 언어로 변경하거나 추가
@@ -152,14 +157,23 @@ export default defineEventHandler(async event => {
       game_domain: gameDomain || '',
       lang_code: getPathLocale(event?.node.req.url),
     }
-    const response = await $fetch<GameDataResponse>(gameApiUrl, {
-      query: queryParams,
-    })
+    const gameDataCacheKey = `${gameApiUrl}:${JSON.stringify(queryParams)}`
+    const cachedGameData = gameDataResponseCache.get(gameDataCacheKey)
+    if (cachedGameData) {
+      gameDataResponse = cachedGameData
+    } else {
+      const response = await $fetch<GameDataResponse>(gameApiUrl, {
+        query: queryParams,
+      })
+      gameDataResponse = response
+      if (gameDataResponse?.code === 0 && 'value' in gameDataResponse) {
+        gameDataResponseCache.set(gameDataCacheKey, gameDataResponse)
+      }
+    }
 
-    gameDataResponse = response
-    gameDataLangCodes = response?.value?.lang_codes || null
-    gameDataDefaultLangCode = response?.value?.default_lang_code || null
-    gameDataIntro = response?.value?.intro?.page_url || ''
+    gameDataLangCodes = gameDataResponse?.value?.lang_codes || null
+    gameDataDefaultLangCode = gameDataResponse?.value?.default_lang_code || null
+    gameDataIntro = gameDataResponse?.value?.intro?.page_url || ''
     event.context.gameDomain = gameDomain
   } catch (error) {
     // eslint-disable-next-line no-console
@@ -201,7 +215,7 @@ export default defineEventHandler(async event => {
       let inspectionData
 
       // 3. 캐시된 데이터가 없거나 만료되었을 때만 API 호출
-      const cachedData = cache.get(cacheKey)
+      const cachedData = inspectionDataCache.get(cacheKey)
       if (cachedData) {
         inspectionData = cachedData
       } else {
@@ -214,7 +228,7 @@ export default defineEventHandler(async event => {
         })
         inspectionData = response?.value?.inspection as WebInspectionData
         if (inspectionData) {
-          cache.set(cacheKey, inspectionData) // 캐시에 저장
+          inspectionDataCache.set(cacheKey, inspectionData) // 캐시에 저장
         }
       }