When comparing KeyCDN vs CDNsun, the Slant community recommends KeyCDN for most people. In the question“What are the best content delivery networks (CDNs)?” KeyCDN is ranked 7th while CDNsun is ranked 18th. The most important reason people chose KeyCDN is:
Traffic [prices](https://www.keycdn.com/pages/pricing) are as low as $0.04/GB and volume pricing starts at 10TB/month.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Transparent, pay-as-you-go pricing
Traffic prices are as low as $0.04/GB and volume pricing starts at 10TB/month.
Pro Simple and easy setup
CDN configuration is instantly deployed.
Pro Free Lets Encrypt SSL certificates for custom zone names
Pro HTTP/2 Support
One of the 1st providers to support HTTP/2
Pro Custom SSL for free
Allows uploading own certificate at no extra cost. Shared SSL is also available.
Pro Brotli support
KeyCDN supports Brotli compression for users who have Brotli enabled on their origin server.
Pro POPs in Australia, Singapore, Hong Kong and Japan at no extra cost
Pro Real-time raw logs available for free
Pro Support SPDY 3.1
KeyCDN supports SPDY 3.1 for even faster secured connections.
Pro HTTP/2 Support
Supports HTTP/2 ON SSL connections
Pro Good help section with useful examples on
Pro Detailed statistics
Pro Highly configurable
Cons
Con Unreasonable anti-spam policy
Not suitable if you have an association with online advertising. A single email that may include your domain that appears on Spamcop will result in a threat to terminate your account and a requirement to disable the URL -- even if you are not responsible for the production or sending of the email.
Con Config changes take 5-10 minutes
Any config change is queued for several minutes before being applied, without any time estimate. Combined with caching and DNS delays, it can make debugging a bit more difficult.
Con It's a bit hard to use a Let's Encrypt certificate
It only lets you to use Let's Encrypt with Push, and to use it with Pull you need to create one manually from your computer.