ndn||mem: an Architecture to Alleviate the Memory Bottleneck for Named Data Networking

Named Data Networking (NDN), as one of the candidates for a future Internet, has the potential to overcome many of the current Internet’s difficulties (e.g., security, mobility, multi-casting, etc.). However, there are also many open problems to be taken care of before it becomes operational. One of the major concerns is that NDN may be memory-intensive. Using the router’s buffer as cache adds a search time to all requests. If the cache hit rate is not high enough (considering current buffer sizes and traffic rates), cache search time may be a burden on the system instead of solving any problems. Huge fast memories are not affordable yet. To balance the memory speed with incoming rate to a router, we pro-pose a memory architecture, called ndn||mem, along with a content caching strategy, called CCndn. Using these two ideas, only a small fraction of packets need to engage in a time-intensive cache search process. Simulation results demonstrate the efficacy of our archi-tecture