Strategy for uploading images to mongoDB Atlas with multer?
If you don't want to store images locally, use MemoryStorage as Multer Storage.
var storage = multer.memoryStorage()var upload = multer({ storage: storage })When using memory storage, the file info will contain a field called buffer that contains the entire file. So you don't have to call fs.readFileSync. You can access buffer with req.file.image.buffer and assign image data;
image.img.data = req.file.image.buffer;