Content Delivery Network Service Provider_httpgrowthpixel.com

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Content Delivery Network:

Content Delivery Network Introduction Server Selection Policy Server Selection Mechanisms Conclusion

Content Delivery Network:

Content Delivery Network A Content Delivery Network or Content Distribution Network is a globally distributed network of proxy servers deployed in multiple data centers. The goal of a CDN is to serve content to end-users with high availability and high performance. CDNs serve a large fraction of the Internet content today, including web objects (text, graphics and scripts), downloadable objects (media files, software, documents), applications (e-commerce, portals), live streaming media, on-demand streaming media, and social networks. CDN Replicates the content : On many server spread throughout the internet. Updating the Replicas: Updates pushed to replicas when the content changes.

Server Selection Policy.:

Server Selection Policy. Live server For availability Lowest load To balance load across the servers Closest Nearest geographically, or in round-trip time Best performance Throughput, latency, … Cheapest bandwidth, electricity,

Server Selection Mechanism:

Server Selection Mechanism Routing : Any cast Routing. Advantages : No extra round trips. Route to nearby server. Disadvantages: Different packets may go to different servers. Does not consider network or server load. Naming: DNS-based server selection Advantages: Avoid TCP set-up delay. DNS caching reduces overhead. Disadvantages: Based on IP address of local DNS server. “Hidden load” effect. 1.2.3.0/24 1.2.3.0/24 1.2.3.5 1.2.3.4 local DNS server DNS query

Conclusion:

Conclusion www .growthpixel.com The term CDN means many things to different people and is an umbrella term that covers a lot of different types of content delivery services. Video streaming, software downloads, web and mobile content acceleration, licensed/managed CDN, transparent caching, and services to measure CDN performance, load balancing, multi-CDN switching and analytics and cloud intelligence. It’s a complex ecosystem with a lot of vendors both large and small and some CDN vendors cross over into other industries like security and WAN optimization.

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