My question is same as below:
Apache Server slows down while serving image frequently.Eventhough I setup and activate mpm_prefork_module.
I may install a webserver that paralells to Apache and serves only images (I come up with this paralell server idea.Do you suggest that?). I found varnish but My Server is on windows and Nginx is not free. What do you suggest me to use for image serving or What should I do?
Nginx is free and open source, you can download here :
https://nginx.org/en/download.html
Mainline version
Could you provide more information ? (logs of apache)