안녕하세요, Discourse 정말 멋지네요! 
저는 포럼을 AWS Lightsail(서울, ap-northeast-2a)에서 호스팅하고 있으며, 사용자의 99%가 한국에 거주하고 있습니다.
이런 상황에서 Fastly나 CloudFlare 같은 CDN을 포럼에 추가해도 여전히 이점이 있을까요?
Only way to find out is test 
Not expecting any major advantages, but a CDN will reduce some of the load on your application server. Also you may have multiple POPs in South Korea so you would possibly serve the files closer to the end users if you pick the right CDN.
South Korea is not a big country, I doubt there are multiply POPs.
If there are no major advantages, I should just stick as it is.
If I happen to add CDN to my forum, I’ll post the test result.
Thank you.
Hi Kevin,
In my view, it is better to keep things simple.
Do not add features, plugins, CDNs, etc unless you really need them. Don’t add tech on top of tech just because “you can”.
South Korea has one of the most robust Internet backbones in the world in a very small geographic footprint. More than likely, you don’t really need a CDN in South Korean for a forum-based web application hosted in South Korean with 99% of the users from Korea.
The major advantage, if all your users are in the same local geographic area, is it reduces load on the server. The static files are served directly from the CDN to the users, and they don’t pass through the rails / ruby pipeline.