Upload large files to AWS s3 using express js synchrounsly - node.js

Question

Currently i am using putObject to upload the large file to AWS s3 with REST api call.
var params ={
Bucket:'lambdacushbu',
Key:req.files.image.name,
Body:req.files.image.data
}
s3.putObject(params,function(err, data) {
if (err) console.log(err, err.stack); // an error occurred
else {
console.timeEnd('Uploadtime');
console.log("uploaded",data);
res.json({
'status':'Uploaded',
'url':data.Location
});
} // successful response
});
But its looks like asynchronous i want the above in synchronous mode also a timeout is occurred but the file is being uploaded to the AWS s3.
So how can i increase the timeout value?? tried with connect-timeout package
app.use(timeout('600000'));
But it dosen't worked

Answer 1

Try using upload function instead of putObject. That should solve your timeout problem.
Here is a documentation for that function: http://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/S3.html#upload-property
Synchronous call will definitely lower your app's performance. Can you provide me more details about your problem so we can find an async solution?
EDIT:
Here is how you should return response in your controller:
router.post('/your-route',
//additional middlewares
function(req, res, next) {
var params = {
Bucket:'lambdacushbu',
Key:req.files.image.name,
Body:req.files.image.data
}
s3.upload(params,function(err, data) {
if (err) { res.json(err); }
else {
res.json({
'status':'Uploaded',
'url':data.Location
}
});
}
);
And make sure you don't call res.json() or res.send() anywhere else in this route