Postman, it’s a great tool for debuging, testing and other activities performed by us - developers. It has a build in option to sign requestes with AWS Signature . We do have AWS SDK for Go v2 , but I couldn’t find any good examples except a test file . The other useful file will be const.go where we can find a couple of interesting variables.

I wanted to implement a timeout in go routines. There are a couple o ways doing that. We could use context.WithTimeout() or we go with classical sync.WaitGroup group with a trick.

Let’s start with the first one.

This one is really quick and easy to set up public bucket policy on DigitalOcean Spaces . Spaces are S3 type object storage, you can check out about it here .

This time really simple solution to submit form using GO. This example allows you to submit form with fields, and also attach file

Object storage is getting more and more popular. AWS started, but nowadays, almost every provider has it. Recently Cloudflare announced its availability. DigitalOcean call them Spaces.

So today, we are trying to upload a file to an S3 type of storage with a presigned URL.

TL;DR: how to generate the correct URL and upload data into it.