Abstract
Information-centric networks (ICNs) have received wide interest from researchers, and in-network caching is an important characteristic of ICN. The management and placement of contents are essential due to cache nodes’ limited cache space and the huge Internet traffic. This paper focuses on coordinating two cache metrics, namely user access latency and network resource utilization, and proposes a hybrid caching scheme called the path segmentation-based hybrid caching scheme (PSBC). We temporarily divide each data transmit path into a user-edge area and non-edge area. The user-edge area adopts a heuristic caching scheme to reduce user access latency. In contrast, the non-edge area implements caching network content migration and optimization to improve network resource utilization. The simulation results show that the proposed method positively affects both the cache hit ratio and access latency.
Highlights
Information-centric networks (ICNs) is the main direction of future network research.Current Internet architecture depends on the end-to-end correspondence between hosts; this is referred to as host-centric networks [1]
This paper focuses on combining the advantages of on-path caching and cooperative caching and proposes a caching scheme based on path segmentation referred to as the path segmentation-based hybrid caching scheme (PSBC)
We carried out a preliminary simulation of PSBC, and the results show the characteristics of our mechanism and its performance under different network topologies
Summary
Information-centric networks (ICNs) is the main direction of future network research. ICN architectures utilize content naming, in-network caching, and a request–response model to achieve an effective and dependable content distribution [2]. An ICN node caches content by configuring additional storage. Caching schemes in ICN can be divided into several categories, including cooperative and non-cooperative caching, off-path, and on-path caching [9]. Future Internet 2021, 13, 16 on-path caching, content is cached on nodes on the data return path [10], while off-path caching [11] provides additional caching at a strategic location. Our goal is to coordinate the two cache targets described above with good performance in user access latency and network resource utilization. We use real-world network topologies to evaluate the performance and scalability of the proposed caching scheme.
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