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This study addresses performance degradation in DNS-based Content Delivery Networks (CDNs) due to remote DNS. It surveys solutions, identifies privacy concerns, and proposes a model for CDN performance understanding.

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Area of Science:

  • Computer Science
  • Network Engineering

Background:

  • DNS-based server redirection is a popular method for Content Delivery Network (CDN) deployment.
  • The increasing use of remote DNS introduces performance degradation challenges for DNS-based CDNs.

Purpose of the Study:

  • To survey state-of-the-art solutions for the remote DNS problem in CDNs.
  • To identify and address privacy concerns related to DNS-based CDNs, including client location and redirection privacy.
  • To provide a model for understanding CDN performance and offer design guidelines for CDN providers.

Main Methods:

  • Review and discussion of existing solutions for remote DNS issues.
  • Identification and summarization of a representative solution for privacy concerns.
  • Comparative analysis of the proposed solution against prior works.
  • Establishment of a model to analyze CDN performance.

Main Results:

  • Identified key privacy concerns in DNS-based CDNs.
  • Summarized a representative privacy-preserving solution.
  • Compared the solution's effectiveness against existing methods.
  • Developed a model for deeper understanding of CDN performance.

Conclusions:

  • The survey provides insights into DNS-based CDN applications.
  • The proposed model and discussed solutions can guide CDN service providers in design and deployment.
  • Addressing remote DNS challenges and privacy concerns is crucial for optimizing CDN performance.