HTTP vs HTTPS performance
When sending larger files (e.g. 10-15 MB) over HTTPS (as opposed to HTTP) what are the performance implications (if any)? (the files are CSVs) Thanks.
HTTPS is more CPU intensive than HTTP. A good way to find out if that is OK or not in your usage scenario is to test and measure.
Generally speaking, I'd say that neither is the right tool for the job. One potential problem is that not all server support resume of interrupted transfers. Also, HTTPS normally doesn't do any compression.
You'll find a good answer in this duplicate question.