fogcached: DRAM-NVM Hybrid Memory-Based KVS Server for Edge Computing

Fogcached: A DRAM/NVMM Hybrid KVS Server for Edge Computing

“…Some types of non-volatile memory devices are being put into practical use. For example, resistance change memory (ReRAM), magnetic memory (MRAM), and phase change memory (PCM) have appeared [7], [8].…”

“…To promptly report the results and obtain the first feedback from the community, we published an early report of Fogcached [7]. Considering the broader reader's interest, we focus this paper to recount the study and add the detailed explanation of the mechanism related to the performance evaluation.…”

Fogcached-Ros: DRAM/NVMM Hybrid KVS Server with ROS Based Extension for ROS Application and SLAM Evaluation

“…Ozawa et al proposed to use NVMM (Non-Volatile Main Memory) to hold a large amount of data on an edge server and develop an In-Memory Key-Value Store (KVS) on a hybrid main memory consisting of DRAM and NVMM [10]. The evaluation also showed that the responsiveness of the edge server was improved.…”

“…Edge servers operating at short distances are required to have high responsiveness and reliability. As a method for obtaining high responsiveness, research has been proposed to improve responsiveness by applying KVS (Key-Value Store) to the edge and applying it as a cache server [10]. Ozawa et al proposed the 'fogcached' mechanism to realize both reliability and responsiveness by extending KVS and switching between DRAM and NVMM (Non-Volatile Main Memory) according to the number of accesses.…”

“…The hybrid-KVS named 'fogcached' is based on 'memcached [11]', which is a typical implementation of key-value store and has been extended to NVMM in order to improve data reliability and responsiveness. It showed effectiveness as the simulation base [10], however, its effectiveness has only been evaluated using simulation, and its effectiveness is not clear in actual applications.…”