I/O request performance improvement using backend as a service

A data storage system comprising:

• a memory;
• and
• at least one processor that is operatively coupled to the memory, the at least one processor being configured to perform the operations of:
• receiving an input/output (I/O) request from a host device;
• determining a memory utilization threshold for a local cache memory;
• determining a local memory utilization level of the local cache memory;
• in response to determining that the local memory utilization level equals or exceeds the memory utilization threshold;
• invoking a backend as a service policy implemented by the storage processor to generate a remote direct memory access (RDMA) operation encapsulating the I/O request;
• and
• transmitting, via a fabric network interface, the RDMA operation to a second memory, thereby temporarily storing the I/O request to reduce local cache memory overflow.

A non-transitory computer-readable medium storing one or more processor-executable instructions, which when executed by at least one processor cause the at least one processor to perform the operations of:

• receiving an input/output (I/O) request from a host device;
• determining a memory utilization threshold for a local cache memory;
• determining a local memory utilization level of the local cache memory;
• in response to determining that the local memory utilization level equals or exceeds the memory utilization threshold;
• invoking a backend as a service policy implemented by the storage processor to generate a remote direct memory access (RDMA) operation encapsulating the I/O request;
• and
• transmitting, via a fabric network interface, the RDMA operation to a second memory, thereby temporarily storing the I/O request to reduce local cache memory overflow.