cache result

src/app.controller.ts

-import { Controller, Get, Req } from '@nestjs/common';
+import { Controller, Get, Req, Res } from '@nestjs/common';
 import { AppService } from './app.service';
-import { Request } from 'express';
+import { Request, Response } from 'express';
 
 @Controller()
 export class AppController {
   constructor(private readonly appService: AppService) {}
 
   @Get('*')
-  render(@Req() req: Request) {
-    return this.appService.render(req);
+  async render(@Req() req: Request, @Res({ passthrough: true }) res: Response) {
+    const result = await this.appService.render(req);
+    res.header('Cache-Control', 'public, max-age=3600, immutable');
+    return result;
   }
 }