I always got scared when my client ask for upload functionality.
from what I’ve read that when user uploaded a file it will an instance
the web server. So if i have one dyno (instance) on heroku, while one
is uploading a big file then the application would not respond to
user request until the file is done ?
I also find a couple of solution like carrierwave-direct which the file
uploaded directly to the storage server (let say S3), then rails can
process the file. If we are to build like a social networking which
involves many user uploading file in the same time, what is the correct
approach to the problem?