如何在Sails JS和Skipper上设置S3缓存？

module.exports.custom = {
  s3: {
    accessKeyId: 'YOUR_ACCESS_KEY',
    secretAccessKey: 'YOUR_SECRET_KEY',
    region: 'YOUR_REGION',
    bucket: 'YOUR_BUCKET_NAME',
    cacheControl: 'max-age=86400', // 设置缓存时间，单位为秒
  },
};

module.exports.http = {
  middleware: {
    order: [
      // ...
      's3Cache',
      // ...
    ],
    s3Cache: (req, res, next) => {
      const { s3 } = sails.config.custom;
      if (req.method === 'GET') {
        const cacheControl = s3.cacheControl || 'max-age=86400';
        res.set('Cache-Control', cacheControl);
      }
      next();
    },
    // ...
  },
};

req.file('fieldName').upload({
  adapter: require('skipper-s3'),
  key: s3.accessKeyId,
  secret: s3.secretAccessKey,
  bucket: s3.bucket,
  cacheControl: s3.cacheControl,
}, (err, files) => {
  if (err) {
    // 处理上传错误
  } else {
    // 处理上传成功
  }
});