What is Multi CDN?

İren Saltalı
Jun 6, 2019 · 2 min read

A Content Delivery Network (CDN) is a group of geographically-distributed servers which deliver static contents with best possible latency. CDNs are key attribute for web performance. But all CDNs can’t best maintain high performance level all the time. They may become out of service, have worse latency or encounter any other problems. With multi CDN architecture you can have stable high performance level and %100 uptime.

Traditional Web Hosting

Most web sites deliver both dynamic and static content from single server to all globe. This method might be still useful for web sites that have limited visitors and when visitors comes from small geographical region that close to the server.

However, if you are targeting visitors from all around the world, this method starts to encounter high latency due to distance from the server.

Also, if your website have high volume of visitors, delivering static content from the server cause performance issues and errors.

Single/Standard Content Delivery Network

CDN is network of servers that caches static content close to visitors to deliver this content with low latencies. CDN providers manages lots of cache servers to be closer to visitor. This way contents like images, javascript and CSS files will be delivered faster due low distance between the visitor and cache server.

Multi Content Delivery Network

Multi CDN is combination of 2 or more CDN networks. image4io is uses multi CDN strategy to deliver content more efficiently and with more robust architecture.

Benefits of Multi CDN

Redundancy and Robustness

With Multi CDN architecture, image4io is providing %100 SLA on CDNs. Even one of our CDN goes down, traffic gets rerouted to another to another network. This way our customer will have zero downtime.

Geographic Coverage

CDN providers geographic coverage often varies. Some of them have better presence in a region according to others, or some of them don’t have any cache server in some regions. Multi CDN strategy enables us to cover all globe by using multiple CDN providers according to their presence on different regions.

Lower Latency and Higher Performance

image4io uses Multi CDN architecture to deliver content with lower latency. We continuously testing CDN providers from different regions. According to test results we are routing requests to best performing CDN from that region.

Load Balancing

Some cache server may have difficulties on peak traffic times. We are distribute this high traffic to different cache servers. Thus, we are preventing low performance issues.

Conclusion

With image4io’s managed Multi CDN architecture our cutomers have %100 uptime and better performance.

Sources:

  • Icons that are used on illustrations are from flaticon.com

Originally published at https://image4.io on June 6, 2019.

image4io

image4io is an end-to-end SaaS product that optimizes the…

image4io

image4io is an end-to-end SaaS product that optimizes the images of web sites and mobile applications. delivers via multi-CDN and manages the images’ storage in the cloud. So increases the conversion rate and decreases the bounce rate.

İren Saltalı

Written by

MSc. Computer Engineer. Founder of @image4io, .NET Software Consultant @kloia_com, co-organizer in @serverlesstr, Community Builder of @awscloud.

image4io

image4io is an end-to-end SaaS product that optimizes the images of web sites and mobile applications. delivers via multi-CDN and manages the images’ storage in the cloud. So increases the conversion rate and decreases the bounce rate.

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