关键词: 命名数据网络（NDN）, 路由器, 内容存储, 分布式存储

Abstract: The storage capacity of existing router cannot meet the demand for NDN (named data networking) cache capacity, resulting in difficulty to deploy NDN. This paper presents a router cache capacity expansion method via software manner—LDFS (lightweight distributed file system). The main idea of LDFS is that using edge network end users and storage servers as storage nodes, virtual cache server manages storage nodes and provides caching services to clients uniformly, clients provide an interface to the upper layer applications via a library function. The main features of LDFS are lightweight clients and a variety of storage resources providing storage services. Finally, the experiments are carried out to measure the performance of the system and verify the client lightweight design advantages.

Key words: named data networking (NDN), router, content store, distributed storing