A Multi-Path based In-network Content Caching Scheme

In this paper we propose an efficient scheme for supporting multi-path based in-network content caching by leveraging Loop-Free Alternate (LFA) in IP routing. The purpose is to enable clustered distribution of cached content chunks at en-route routers between the content source and the requester. In order to achieve caching localization, we also introduce policies that limit the maximum allowable distance between caching routers and the final destination, which is known as caching radius. The benefit of the scheme is to distribute contents locally around interested receivers in a balanced manner. We evaluated the proposed algorithm through simulations based on the GEANT network topology. The performance exhibited by the multi-path based caching scheme outperforms conventional approaches based on single path routing.