Using cachedEvendHandler for files

[amandesai01]

Basically, I want to serve assets from a event handler in server.
Questions:

1. Is it worth adding caching for static assets?
2. If yes, I am facing below issue.
   When cached handler is called for first time, it returns asset directly and works fine. (Image in my case). Now, after caching, I believe that image is in the form of buffer and thus, gets stringified which is causing the issue. The handler than return stringified version of Buffer.

export default defineEventHandler(async (event) => { // THIS WORKS!
  const key = getRouterParam(event, "key"); 
  const asset = await blobStorage.getItemRaw(key);
  return asset;
});

export default defineCachedEventHandler(async (event) => { // THIS DOESN'T
  const key = getRouterParam(event, "key");
  const asset = await blobStorage.getItemRaw(key);
  return asset;
}, {
  maxAge: 60 * 60,
  getKey(event) {
    return getRouterParam(event, "key") || "";
  },
})

For full context, see: https://github.com/profilecity/vidur/blob/main/src/server/routes/assets/%5Bkey%5D.ts