PPCS: A Progressive Popularity-Aware Caching Scheme for Edge-Based Cache Redundancy Avoidance in Information-Centric...

Area of Science:

• Computer Science
• Networking
• Distributed Systems

Background:

• Information-Centric Networking (ICN) faces challenges with cache redundancy and content availability.
• Existing caching schemes often struggle with efficient utilization of limited cache space.

Purpose of the Study:

• To propose a novel chunk-based caching scheme, the Progressive Popularity-Aware Caching Scheme (PPCS), for ICN.
• To address cache redundancy and improve content availability in ICN networks.
• To optimize cache utilization through an autonomous replacement policy.

Main Methods:

• PPCS employs a hybrid caching strategy: entire-object caching for popular content and partial-progressive caching for less popular content.
• Initial chunks are cached at edge nodes, with subsequent chunks progressively cached at upstream Content Nodes (CNs) based on popularity and position.
• An autonomous replacement policy is introduced to maximize cache utility.

Main Results:

• PPCS significantly outperforms existing ICN caching strategies in reducing latency (hops) and cache redundancy.
• The scheme demonstrates improved content availability (hit rate), particularly with small CN cache sizes.
• Edge computing is leveraged for joint optimization of caching and replacement decisions.

Conclusions:

• PPCS offers an efficient solution for ICN caching by intelligently managing content chunks.
• The proposed scheme effectively balances cache space utilization and content retrieval performance.
• PPCS represents a significant advancement in developing comprehensive ICN caching solutions.