KeyCDN is a high-performance CDN combining best prices with lots of features.
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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.
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.