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How to Use Multi CDN to Mitigate Cloud Incidents?

Michael Hakimi
Multi-CDN Strategy
June 20, 2024

Use a Multi CDN solution to distribute your content across various CDN providers. This approach, different from a single CDN, ensures redundancy, improved performance, and resilience against cloud incidents, minimizing downtime and enhancing user experience.

Here is how having a multiple CDN setup works in practice:

Implement a Multi-Content Delivery Network Hub

To start, implement a multi-content delivery network hub. For instance, using a multi-CDN provider management service like IO River can simplify the process. 

This hub acts as a centralized management system that orchestrates traffic across different CDNs. It intelligently routes traffic based on real-time data, optimizing performance and reliability.

  1. Setup IO River: Sign up for IO River and integrate your existing CDN providers. Follow their guidelines to link each CDN to the hub.
  2. Configure Routing Rules: Define routing rules that determine how traffic should be distributed. These rules can be based on factors like geographic location, server load, or real-time performance metrics.
  3. Monitor Performance: Use the dashboard provided by IO River to monitor the performance of each CDN. This will give you insights into traffic distribution and help you identify any issues that need addressing.

Set Up Automated Failover Mechanisms

Next, set up automated failover mechanisms to ensure continuous availability during incidents. 

Failover mechanisms automatically reroute traffic to an alternative CDN if one experiences issues.

  1. Define Failover Criteria: Determine the conditions under which failover should occur. This could be based on latency thresholds, server response times, or outright failures.
  2. Implement Failover Scripts: Use IO River's failover functionality to implement these criteria. This often involves setting up scripts or using built-in features that detect issues and switch traffic seamlessly.
  3. Test Regularly: Conduct failover tests to ensure everything works as expected. Simulate different failure scenarios and monitor how your system responds to make necessary adjustments.

Optimize Performance with Real-Time Monitoring

Optimizing performance requires real-time monitoring to make informed decisions about traffic routing and CDN performance.

  1. Use Monitoring Tools: Integrate real-time monitoring tools such as Cedexis or Catchpoint with IO River. These tools provide detailed analytics on CDN performance.
  2. Analyze Data: Regularly review performance data to identify trends, bottlenecks, and areas for improvement. Look for patterns that indicate potential issues or opportunities to enhance performance.
  3. Adjust Routing Rules: Based on the data, fine-tune your routing rules in IO River to ensure traffic is always directed through the most efficient paths. This can involve shifting traffic away from underperforming CDNs to those that offer better performance at any given time.

Optimize for Cost Efficiency

Managing costs is why you use multiple CDNs. Optimize your setup to ensure you are getting the best performance without overspending.

  1. Cost Analysis: Regularly analyze the costs associated with each CDN provider. Compare these costs against their performance metrics to determine the most cost-effective options.
  2. Adjust Usage: Use IO River to adjust your CDN usage based on cost and performance data. For example, during peak traffic times, you might prioritize higher-performance CDNs, while during off-peak times, you might switch to more cost-effective options.
  3. Set Budget Alerts: Implement budget alerts to monitor spending and avoid unexpected costs. This helps maintain budget control while optimizing your Multi CDN investment.

Collaborate with CDN Providers

Finally, collaboration with your CDN providers is essential for maintaining a robust and efficient Multi CDN setup.

  1. Establish Communication Channels: Maintain open lines of communication with your CDN providers. Regularly touch base to discuss performance, potential issues, and best practices.
  2. Support Agreements: Ensure you have strong support agreements in place, including Service Level Agreements (SLAs) that guarantee response times and support levels.
  3. Feedback Loop: Create a feedback loop with your providers. Share performance data and insights from your real-time monitoring tools. Use this information to work with providers on improving services and addressing any concerns.

If you’re unaware why going through these hoops is worth it, then I suggest you check out this blog on: How Can Multi-CDN Protect Your Website