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CDN
A Content Delivery Network (CDN) is a system of distributed servers designed to deliver digital content - such as websites, applications, videos, and other online services - quickly, reliably, and securely to end-users based on their geographic location. By caching content on local edge servers closer to users, CDNs improve website performance, speed, availability, and scalability, while reducing latency and minimizing the load on the origin server. They also help handle peak traffic efficiently, optimize delivery costs, and enhance security by protecting against traffic spikes, downtime, and cyberattacks like DDoS attacks.
Prerequisites: registered domain name, website or web application, DNS management Access, SSL/TLS Certificates (optional but recommended).
When a user requests a web content, the nearest CDN server responds.
- Performance
- Faster load times by reducing distance to users.
- Lower latency and improve user experience by minimizing the distance to content.
- Reliability
- Traffic balance to prevent downtime.
- CDNs ensure uptime by distributing content across multiple servers, so if one server fails, another can take over.
- Scalability
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CDNs help handle spikes and traffic surges in traffic by distributing the load across multiple servers.
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A CDN does not replace your web host. Your site’s original files stay on the origin server, while the CDN caches and serves copies from its network to improve speed and reliability.
