content-distribution-network
Uptime is a critical component for anyone with an internet property. Hardware failures and spikes in traffic due to malicious attacks or simply increased popularity have the potential to bring morocco phone number library down a web server and prevent users from accessing a site or service. A versatile CDN has several features that will minimize downtime:
Load balancing distributes network traffic evenly across several servers, making it easier to scale rapid increases in traffic.
Intelligent failover ensures uninterrupted service even if one or more CDN servers are offline due to hardware failure; failover can redistribute traffic to other operating servers.
In case of technical issues in the entire data center, Anycast routing transfers traffic to another available data center, ensuring that no user loses access to the website.
Yield
One of the main tasks of a CDN is to minimize latency. From an architectural perspective, it is important to build the best possible connectivity where POPs are located at the intersections of major network hubs where data travels.
Physical facilities are another important consideration. As a rule of thumb, you always want your POP to be in a top-tier data center where backbone providers are peered with each other and where your CDN provider has peer agreements with other CDNs and major carriers. Such agreements allow CDNs to significantly reduce round-trip times and improve bandwidth utilization.
Scalability
CDNs designed for high-speed, high-volume routing are expected to handle all types of traffic. The CDN architecture must meet these expectations by providing ample network and processing resources at every level, down to the compute and caching resources available on each cache server.
As expected, CDNs that provide DDOS protection services have much higher scalability requirements. To meet these needs, they deploy special servers designed for DDOS mitigation (scrubbers). These can handle network-sized traffic individually, processing tens of gigabytes per second.
