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CenturyLink versus CacheFly

Easily compare CenturyLink and CacheFly for POP locations, products, pricing, features & support. We hope this helps you better understand the similarities and differences between these content delivery networks.

CenturyLink logo CacheFly logo


Company CenturyLink CacheFly
Short profile CenturyLink owns and operates a global Tier-1 network and - logically - their CDN runs on top of it. CenturyLink CDN has POPs on all continents and their product focus is on video and large object delivery. CenturyLink CDN is part of the Google Cloud CDN Interconnect. Launched in 2002, CacheFly developed the world's first TCP-anycast based content delivery network. CacheFly has a focus on optimizing the CDN for throughput and has steadily built out the network to now have 50+ POPs on 6 continents. CacheFly provides a 100% uptime SLA and takes pride in acting as 'consultants to our customers'.


  • Yes = Yes
  • Sortof/partially = Sort of/partially
  • No = No
  • Unknown = Unknown
Product CenturyLink CacheFly
Dynamic content deliveryNon-cacheable content delivery. User login, shopping cart ... No Yes
Small file deliveryStatic object delivery; caching of small files (file size <1 MB) Yes Yes
Large file deliveryStatic object delivery; caching of large files (file size >1 MB) Yes Yes
Live videoDelivery of live video. RTMP? Transcoding/transmuxing? Yes CDN Mesh Delivery Yes Ultra Low Latency Video Streaming
Video on demandDelivery of on demand video Yes CDN Mesh Delivery Yes VoD
Image OptimizationAutomatic image transformation/compression/optimization No Yes part of Smart Edge Apps
DNSAuthoritative DNS for customer domain No No
WAFWeb Application Firewall No Yes Security Suite
tooltip Powered by Oracle Dyn Web Application Security services (formerly Zenedge)
Anti-DDoSDDoS attack protection. Specific product(s) for this. Yes Yes Security Suite
tooltip Powered by Oracle Dyn Web Application Security services (formerly Zenedge)
Private CDNDedicated edge resources & custom configs No Yes Fully custom solution
Edge ComputeRun your code on CDN edge servers Unknown Yes Smart Edge Apps


Region CenturyLink CacheFly
North America 29 17
Latin America 9 7
Europe 36 14
Russia & CIS 0 1
Asia excl. China 7 7
China 0 2
Oceania 4 3
Middle-East 4 4
Africa 3 1


Pricing & contract duration CenturyLink CacheFly
Minimum contract term 12 months 1 month
Minimum monthly costs Unknown $595 (35 TB/m)
Requests costsCustomers pay for client to CDN requests None No
Ingress costsCustomers pay for origin-to-CDN bytes transferred None Yes
NA/EU traffic (low volume) Unknown n/a
APAC traffic (low volume) Unknown n/a
LATAM traffic (low volume) Unknown n/a


  • Yes = Yes
  • Sortof/partially = Sort of/partially
  • No = No
  • Extra costs = Extra costs
  • Unknown = Unknown
Web acceleration CenturyLink CacheFly
Instant setupSign up, configure, start testing. No Can't sign up and get started. Must talk to sales. No
Change propagation delayHow fast do config changes propagate to all POPs? Unknown Sortof/partially 5 - 180s depending on the change
Apex/root domain OK Blog: Root domain on CDN and performanceNo performance degradation when using http(s):// No No global Anycast Extra costs Must purchase dedicated IP
tooltip Or use DNS provider that can do CNAME flattening
HTTP/2 No Yes
IPv6Do the edge servers have IPv6? Unknown No
Compression CDN Guide: CompressionReduce file size for faster delivery Sortof/partially Resend from origin only
tooltip Does not compress on the edge
Yes Resend from origin, or compress on edge
Origin pull - protocolHTTP only or HTTPS possible too? Yes HTTP and HTTPS. Yes HTTP and HTTPS
tooltip Match client to edge request protocol is possible
Origin pull - Host headerUse client > edge value? Set specific value? Yes Configure specific other Host header
tooltip CDN can also forward client request Host header to origin
Yes Set specific Host header value or forward value from client to edge request
Origin ShieldOne POP pulls from origin, other POPs pull from the shield POP Extra costs Yes
Push / uploadStore your content directly on CDN, no customer origin Extra costs FTP, SFTP, rsync. Storage costs apply Extra costs FTP. Some storage free, more storage available at additional costs
Cache control - CDN caching Sortof/partially Yes Origin headers are honored. Can config overrides
Cache control - client caching Sortof/partially Yes Origin headers are forwarded to client. Can config overrides
Serve Stale CDN Guide: Serve StaleCDN serves cached but expired content in case origin is in trouble Unknown Yes CacheFly support team can activate this edge behaviour
Purge CDN Guide: PurgeInvalidate or delete cached objects on CDN Yes Instant Yes Instant (under 5s)
Purge - capabilities Sortof/partially Purge all but not purge by directory or tag or header Sortof/partially Purge all and by directory, not by tag or header
Analytics Yes Yes Near real-time, lots of metrics
Log files Yes
tooltip Logs are 24h delayed
Extra costs Pull via FTP or have pushed to customer endpoint
tooltip Logs are 5 minutes delayed
API Sortof/partially Purge, analytics, configuration (but limited) Yes Purge, analytics, configuration
HTTPS & Content Protection CenturyLink CacheFly
CDN domain HTTPSUse the CDN's domain, like No Yes Free
Customer domain HTTPSYour domain in the CDN's certificate Extra costs Extra costs Custom pricing
Customer cert HTTPSYour certificate on the CDN Extra costs Extra costs EV cert and/or Non-SNI possible
Token authentication Extra costs Yes Self-service activation/configuration
Geo blocking Extra costs Yes Self-service activation/configuration. Predefined and custom rules
Hotlink protectionThird parties cannot deeplink to your content Unknown Yes
Basic authenticationUser logs in on the CDN to get content Unknown Extra costs Available in a Custom/Private CDN scenario
IP white/blacklisting Unknown Yes Custom rules can be scripted (by support team at no extra charge)


Customer support CenturyLink CacheFly
Documentation Sortof/partially Yes, but not public Yes Yes, public
Humans Yes All customers get 24/7 email and phone support Yes All customers get 24/7 email and phone support and a dedicated implementation/solutions engineer. Extra support ('Elite managed') available at a fee with SLA for support response time