An access request processing method, wherein the method is performed by a computer system, the computer system comprises a processor, a hybrid memory comprising a dynamic random-access memory, DRAM, and a non-volatile memory, NVM, and the method comprises: receiving a write request, wherein the write request carries a file identifier, a buffer pointer, and a size of to-be-written data, the buffer pointer is used to point to a buffer caching the to-be-written data, the buffer is a section of storage space divided from the DRAM or the NVM, and the to-be-written data is modified data for an object file to be accessed by the write request; obtaining an access location according to the file identifier, wherein the access location indicates a start address for writing data to the object file by the write request; determining an object cache page among object cache pages according to the access location, the size of the to-be-written data, and a cache page size, wherein the object cache page is a memory page that is in the DRAM and is used to cache file data, to be modified by the to-be-written data, in the object file; determining that the NVM stores a log chain of the object cache page, wherein the log chain of the object cache page comprises at least one data node, and each data node comprises information about modified data of the object cache page in one modification process; inserting a new data node into the log chain of the object cache page, wherein the inserted data node comprises information about a log data chunk of the object cache page, the log data chunk is data to be written into the object cache page, the log data chunk is at least one part of to-be-written data obtained from the buffer according to the buffer pointer, and the information about the log data chunk comprises the log data chunk or a storage address of the log data chunk in the NVM; determining valid data in the log chain of the object cache page according to the information that is about a plurality of log data chunks and that is recorded in the log chain of the object cache page, wherein the valid data is latest modified data of the object cache page; updating the object cache page to include the valid data to obtain an updated object cache page; storing data of the updated object cache page in an external storage device of the computer system. receiving a write request, wherein the write request carries a file identifier, a buffer pointer, and a size of to-be-written data, the buffer pointer is used to point to a buffer caching the to-be-written data, the buffer is a section of storage space divided from the DRAM or the NVM, and the to-be-written data is modified data for an object file to be accessed by the write request; obtaining an access location according to the file identifier, wherein the access location indicates a start address for writing data to the object file by the write request; determining an object cache page among object cache pages according to the access location, the size of the to-be-written data, and a cache page size, wherein the object cache page is a memory page that is in the DRAM and is used to cache file data, to be modified by the to-be-written data, in the object file; determining that the NVM stores a log chain of the object cache page, wherein the log chain of the object cache page comprises at least one data node, and each data node comprises information about modified data of the object cache page in one modification process; inserting a new data node into the log chain of the object cache page, wherein the inserted data node comprises information about a log data chunk of the object cache page, the log data chunk is data to be written into the object cache page, the log data chunk is at least one part of to-be-written data obtained from the buffer according to the buffer pointer, and the information about the log data chunk comprises the log data chunk or a storage address of the log data chunk in the NVM; determining valid data in the log chain of the object cache page according to the information that is about a plurality of log data chunks and that is recorded in the log chain of the object cache page, wherein the valid data is latest modified data of the object cache page; updating the object cache page to include the valid data to obtain an updated object cache page; storing data of the updated object cache page in an external storage device of the computer system.