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A comment on Using Immutable Caching to Speed Up the Web. Parent comment

Re:Using Immutable Caching to Speed Up the Web by kijin on Friday January 27, 2017 @12:23AM (#13497942)
South Korea here. Every time I find random asset-loading delays in my clients' websites, it's caused by one of the major CDNs such as Google web fonts and code.jquery.com.

International connectivity out of Korea is pretty congested, especially at peak hours. Tokyo is 30-40ms away in the morning but randomly jumps to 150ms+ in the evening. It can take more than 1 second for the DNS lookup, TCP and SSL handshakes, let alone the actual transfer. So unless the CDN in question has a physical presence in Korea, it is almost always faster to load assets directly from the web server.

I suspect that many regions outside of US/EU are in a similar situation. Using a POP in another country 2000km away does jack shit for local websites, and only harms companies that fall for aggressive CDN marketing.

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Re:Using Immutable Caching to Speed Up the Web by michaelmior on Friday January 27, 2017 @11:03AM (#13500535)
Sure, if your target market is outside the area covered by your CDN's POPs then you're not going to get anything out of it. Although if you do get a CDN that's appropriately located it can be a huge win if you can avoid leaving certain country boundaries.
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