Fecha de publicación: 11/06/2024 Fuente: Wipo "IOT" The invention discloses a hierarchical heterogeneous IoT (Internet of Things) time series data retrieval system and method for an NVM (Non-Volatile Memory), and the method comprises the steps: building an IoT time series data storage engine, designing a block group-oriented skip list index ordered construction strategy and a timestamp query-oriented TS-Radio in the IoT time series data storage engine, and improving the efficiency and stability of querying IoT time series data; for redundant information stored in the skip list index node, a redundancy deletion and reconstruction strategy is designed to reduce the storage space occupation of the NVM and prolong the service life of the NVM; and when the IoT time series data in the block group is searched by using the skip list, the whole skip list is reconstructed in the DRAM, so that the query efficiency of the IoT time series data in the group is ensured. According to the method, index optimization is performed by fully utilizing the advantages of the NVM and the characteristics of the IoT time series data, so that a higher space utilization rate of a storage system is realized, and the IoT time series data is efficiently retrieved.