optimize: sử dụng redis để cache cho các response từ server

backend/package.json

@@ -19,6 +19,7 @@
     "typescript": "^5.5.3"
   },
   "dependencies": {
+    "@nestjs/cache-manager": "^3.1.3",
     "@nestjs/common": "^11.1.27",
     "@nestjs/core": "^11.1.27",
     "@nestjs/jwt": "^11.0.2",
@@ -29,10 +30,13 @@
     "@prisma/adapter-pg": "^5.16.2",
     "@prisma/client": "^5.16.2",
     "bcrypt": "^6.0.0",
+    "cache-manager": "^7.2.8",
+    "cache-manager-redis-yet": "^5.1.5",
     "dotenv": "^17.4.2",
     "passport": "^0.7.0",
     "passport-jwt": "^4.0.1",
     "pg": "^8.12.0",
+    "redis": "^6.0.0",
     "reflect-metadata": "^0.2.2",
     "rxjs": "^7.8.2",
     "sharp": "^0.35.1",