// middlewares/cache.ts
import { Request, Response, NextFunction } from 'express'

export default function cacheMiddleware(req: Request, res: Response, next: NextFunction) {
  if (process.env.NODE_ENV === 'production') { // 只在生产环境中启用缓存
    const cacheTime = 60 * 60 * 24 // 设置缓存时间，这里为一天
    res.setHeader('Cache-Control', `public, max-age=${cacheTime}`)
  }
  next()
}