Read performance of memory devices

A memory controller for managing a memory device, the memory controller comprising:

• one or more processors;
• and
• one or more machine-readable media storing instructions that, when executed, cause the one or more processors to perform operations comprising:
• receiving a memory read command;
• determining, from the memory read command, an address of a target memory location in a storage memory of the memory device, wherein the target memory location is without an associated memory location in a cache memory of the memory device, wherein the storage memory comprises a first type of memory cells and the cache memory comprises a second type of memory cells;
• executing a read operation on the target memory location in the storage memory;
• determining that a particular entry corresponding to the target memory location is present in a data structure that includes a specified plurality of entries indicating recent frequently read memory locations in the storage memory;
• in response to determining that the data structure includes the particular entry corresponding to the target memory location:
• incrementing a read count for the particular entry;
• moving the particular entry to a head of the data structure;
• determining that the incremented read count for the particular entry satisfies a threshold read count value, wherein entries in the data structure with respective read counts satisfying the threshold read count value correspond to memory locations in the storage memory having data mirrored to memory locations in the cache memory;
• and
• upon determining that the incremented read count for the particular entry satisfies the threshold read count value, copying data from the target memory location in the storage memory to a memory location in the cache memory.

A memory device comprising:

• a storage memory including a first type of memory cells;
• a cache memory including a second type of memory cells;
• and
• a memory controller to manage the storage memory and the cache memory, wherein the memory controller is configured to perform operations comprising:
• receiving a memory read command;
• determining, from the memory read command, an address of a target memory location in the storage memory, wherein the target memory location is without an associated memory location in the cache memory;
• executing a read operation on the target memory location in the storage memory;
• determining that a particular entry corresponding to the target memory location is present in a data structure that includes a specified plurality of entries indicating recent frequently read memory locations in the storage memory;
• in response to determining that the data structure includes the particular entry corresponding to the target memory location:
• incrementing a read count for the particular entry;
• moving the particular entry to a head of the data structure;
• determining that the incremented read count for the particular entry satisfies a threshold read count value, wherein entries in the data structure with respective read counts satisfying the threshold read count value correspond to memory locations in the storage memory having data mirrored to memory locations in the cache memory;
• and
• upon determining that the incremented read count for the particular entry satisfies the threshold read count value, copying data from the target memory location in the storage memory to a memory location in the cache memory.