Memory expansion method and related device

A data obtaining method performed by a first network device, comprising:

• sending data request information to a second network device running a target application, wherein the data request information is for requesting target data;
• receiving target address information sent by the second network device, wherein the target address information comprises an address of a memory resource in a first memory pool storing the target data;
• and
• obtaining the target data from a second memory pool in the first memory pool based on the target address information by using memory semantics, wherein the second memory pool indicates a memory resource that is allowed to be used by the target application, and the first memory pool is a logical memory comprising memory resources provided by a plurality of network devices, wherein the memory topology includes a quantity of network devices that provide memory resource to be used by the target application, a type of the provided memory resource to be used by the target application, and a capacity of the provided memory resource to be used by the target application.

A network device comprising:

• a memory storing executable instructions;
• and
• one or more processors configured to execute the executable instructions to cause the network device to:
• generate a memory topology based on memory requirement information of a target application and usage of a memory resource in a first memory pool, wherein the first memory pool is a logical memory comprising memory resources provided by a plurality of network devices, and wherein the memory topology includes a quantity of network devices that provide memory resource to be used by the target application, a type of the provided memory resource to be used by the target application, and a capacity of the provided memory resource to be used by the target application;
• and
• establish a second memory pool in the first memory pool based on the memory topology, wherein the second memory pool comprises a memory resource that is allowed to be used by the target application.