CDN Uptime. All the Time. No Matter What.
June 9, 2015 | Robert GibbYou can listen to an audio version of this blog post as well. More companies are relying on CDNs to push content to users. This much is evident from research recently conducted that indicates the need for an always-on CDN. One report by Cisco estimates that 57% of all global Internet traffic will cross CDNs by 2018 (up from 36% in 2013). Another report estimates that the CDN market will grow to $12.16 billion by 2019 (up from $3.71 billion in 2014). During a time when digital media is becoming more plentiful and people less patient, CDNs close the gap between users and servers and help companies turn new demands into new opportunities. There is a caveat though, and that is that no CDN is foolproof. So for businesses that require a 100% always-on CDN - with absolutely no exceptions - creating a CDN failover strategy is key. In Designing Your CDN Failover Strategy, we present ways of distributing content across multiple CDNs. This approach uses two or more independent CDNs to increase redundancy, provide load balancing, reduce the impact of outages, and improve the speed of your web services.
Types of CDN Failover StrategiesAs we cover in the CDN failover strategy PDF, a CDN failover strategy can also become part of your everyday content delivery strategy. This type of failover strategy can be referred to as active. In other words, one CDN doesn’t have to fail in order for a second CDN to deliver content. Each CDN in the content delivery mix is always active, never just stationed as backup. Usually the CDN with the closest, most available PoP will be used to deliver the requested content. This failover strategy differs greatly from the passive type. A failover strategy that integrates another CDN into the content delivery mix strictly as a failover solution can be called passive. The second CDN waits in the background, always assuming the worst. Although passive, it’s always ready to deliver content to users should the original CDN fail.
A CDN failover strategy can provide everyday speed benefits (active) or simply act as backup (passive)