To test this, all that's needed is to upload an image to our target directory. I'll use one of my photos from the High Sierra in California, along with the AWS command-line interface. The original photo is 2,816 × 2,112 pixels:
$ aws s3 cp 1186218980_878902b096_o.jpg s3://brianz-image-resize-fanout/ --acl public-readupload: ./1186218980_878902b096_o.jpg to s3://brianz-image-resize-fanout/1186218980_878902b096_o.jpg
Let's inspect the logs from the ResizeImage function. What we expect to see is three invocations right around the same time. Bear in mind that these may finish at entirely different times since the workload between ...
