Method and system for constructing persistent memory index in non-uniform memory access architecture

A system for constructing a persistent memory index, wherein the system is in a non-uniform memory access (NUMA) architecture, the NUMA architecture comprising a plurality of NUMA nodes, the system comprising:

• a DRAM, configured to maintain a global volatile view shared by the plurality of NUMA nodes;
• a persistent memory, configured to maintain a partial persistent view on each NUMA node and store an underlying persistent memory index for the plurality of NUMA nodes;
• and
• a plurality of CPU cores;
• wherein when cold data is accessed via a foreground thread, the underlying persistent memory index is configured to process a request in the foreground thread;
• wherein when hot data is accessed via the foreground thread, the plurality of CPU cores are configured to:
• read a key-value pair corresponding to a piece of hot data in the global volatile view in response to a query operation carried in the request;
• and
• update a local partial persistent view of a NUMA node where the foreground thread is located and the global volatile view in response to an insert, update or delete operation carried in the request;
• and
• wherein in response to a hotspot migration, the plurality of CPU cores are configured to:
• generate new partial persistent views and a new global volatile view based on new hot data via a background thread, and recycle the partial persistent views and the global volatile view for old hot data into the underlying persistent memory index via the background thread.