I'm working on a small web application that's starting to gain some users, and I need help figuring out the best way to manage file uploads. I keep hearing about S3 as a reliable option, and I've looked into pre-signed URLs, but I'm unsure if that's the best approach. Should I set up a front-end button and manage the S3 functionality behind the scenes? I'm looking for any advice or suggestions on how to effectively handle this. Thanks in advance!
6 Answers
If you choose to go with pre-signed URLs, make sure you're not putting your S3 credentials in the front end. All pre-signed URL requests should be handled server-side, like with a Lambda function. It keeps your credentials secure.
You'll need a server to generate those pre-signed URLs. A Lambda function is a great choice for this. It can compute the URLs on demand and maintain security at the same time.
Using pre-signed URLs is definitely a solid route! They allow your application to securely hand over upload permissions without exposing your S3 access keys directly. It keeps things both simple and safe for your app.
Definitely use pre-signed URLs generated from your server. This secures the uploads and helps you manage and rate-limit requests to avoid unexpected costs from large uploads. Moreover, when files are uploaded to S3, don't just use S3 for delivery. It can get pricey transferring data out, so consider using a CDN like CloudFront with pre-signed URLs for delivering files efficiently.
Even better, you can do pre-signed uploads through CloudFront! This way, your S3 bucket is hidden, and all access goes through your own domain. Super handy!
What are your main concerns with the files? Are they going to be publicly accessible or private? That's key in deciding how to handle uploads.
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