KeyCDN is a European CDN service provider founded in 2012 and headquartered in Switzerland. This page fromTechnical Implementation, Performance Testing, Security Capabilities, and Actual Usage Costs Let's go.
Conduct a structured evaluation of KeyCDN CDN to help webmasters and developers determine its suitability for their specific business scenarios.
1. What is KeyCDN?
KeyCDNis a company that Developers and Technical Team A global content delivery network (CDN) provider serving core user groups, featuring an Anycast network architecture, pay-per-traffic pricing model, and automated API interfaces.
Unlike CDNs with a biased focus on eco-friendliness, KeyCDN prioritizes the stability, transparency, and controllability of the CDN itself. Within the tech community, it is often regarded as a Value-driven, engineer-focused CDN。
II. KeyCDN Global Nodes and Network Architecture
KeyCDN employs Anycast + Multiple Points of Presence The CDN network architecture automatically routes requests to the nearest edge node with optimal load.
- Covering 40+ countries
- 60+ Edge Nodes (Points of Presence)
- The focus is primarily distributed across Europe, America, East Asia, and Southeast Asia.
In actual testing, latency performance for access from Europe and America was excellent. While the number of Asian nodes is relatively fewer than those of major industry players, overall stability remains solid.
III. Protocol Support and Transmission Capabilities
| Function | Support Status |
|---|---|
| HTTP/2 | Support |
| HTTP/3 / QUIC | Not yet fully supported |
| IPv6 | Support |
| TLS 1.3 | Support |
| Brotli compression | Support |
KeyCDN's technical strategy prioritizes maturity and stability, featuring comprehensive protocol implementations that suit sites seeking predictable behavior.
IV. KeyCDN CDN Performance Benchmarking (Reproducible)
The following is for use with curl Examples of basic performance tests conducted on KeyCDN CDN resources, primarily focusing on DNS resolution, TLS handshake, and Time to First Byte (TTFB).
curl -o /dev/null -s -w \ DNS: %{time_namelookup}s\n Connect: %{time_connect}s\n TLS: %{time
"DNS: %{time_namelookup}s\nConnect: %{time_connect}s\nTLS: %{time_appconnect}s\nTTFB: %{time_starttransfer}s\nTotal: %{time_total}s\n" \
https://yourcdn.keycdn.com/test.jpg
Results from multiple test nodes indicate that KeyCDN performs well in static resource distribution scenarios.TTFB is low, and connection establishment speed is stable.Suitable for blogs, documentation sites, and static websites.
V. Cache Hits and Header Validation
curl -I https://yourcdn.keycdn.com/test.jpg
Typical Response Header:
x-cache: HIT x-edge-location: usny cache-control: public, max-age=31536000
The header confirms that the caching strategy is active, with resources being served directly from edge nodes.
VI. KeyCDN Security Capability Analysis
KeyCDN provides foundational yet practical CDN security capabilities, including:
- Free HTTPS (Let's Encrypt)
- Custom Certificate Support
- IP Blacklist and Whitelist
- User-Agent and Referer Rules
- Basic DDoS Traffic Mitigation Capabilities
It is important to note that KeyCDN is not a complete WAF solution and is more suitable for Security Protection Needs for Small and Medium-Sized Websites。
VII. API and Automation Capabilities
KeyCDN provides a comprehensive REST API, ideal for automated deployment and CI/CD scenarios.
curl -X DELETE \ https://api.keycdn.com/zones/purge/ZONE_ID.json \ -u API_KEY: \ -H "Content-Type: application/json"
Supports file-level, directory-level, and site-wide cache clearing with a clear API design.
VIII. KeyCDN Pricing Model and Cost Analysis
KeyCDN employs Pay-as-you-go No monthly fees, no minimum spending:
- North America / Europe: Approximately $0.04 / GB
- Asia Region: Approximately $0.08 / GB
For low-to-medium traffic websites, the cost control advantages are significant.
IX. Scenarios Where KeyCDN Is Suitable and Unsuitable
Suitable for:
- Technology Blog / Security Blog
- Static Resource Site
- SaaS Official Website
- API Documentation Site
Not quite suitable:
- Highly dynamic, high-concurrency business
- Applications that rely on advanced WAFs
- Websites highly dependent on mainland China nodes
X. KeyCDN Evaluation Conclusions
Considering overall performance, safety, price, and technological controllability,
KeyCDN is a High cost-performance ratio, engineer-friendly CDN service provider,
Particularly suitable for small and medium-sized websites seeking stability and transparency.
