Ok, so why a new library and associated dev time when thumbor and other libraries already exist, especially if you're willing to spend 5k/month on instances just for this?
That was pretty clear in the post - they didn't find a Golang lib that could compete with their pillow-simd on resizing, which was the main performance bottleneck.
Why was a Go version needed if performance was paramount? There are libraries already that can handle this performance just fine.
If they're going to spend 60k/year on instances, the dev time definitely wasn't worth it for this. They just wanted to use that language because this is a NIH situation, not really an engineering priority.
