Request control for memory sub-systems

An apparatus, comprising:

• a processing device of a front-end of a memory sub-system, configured to:
• receive an indication of availability to receive additional data from a host;
• and
• provide a request, from the front-end of the memory sub-system, to a back-end of the memory sub-system;
• delete the request from a buffer of the processing device of the front-end of the memory sub-system;
• responsive to deleting the request from the buffer and providing the request to the back-end, determine whether a quantity of requests in a back-end buffer is greater than a threshold;
• and
• responsive to determining that the quantity of requests is less than the threshold and based on the indication indicating that the host is available to receive additional data, provide, from the front-end and to the host, an indication of the quantity of requests stored in the back-end buffer.

A non-transitory computer readable medium having computer readable instructions stored thereon that are executable by a processor to:

• receive an indication of availability to receive additional data from a host;
• and
• receive a request, at the front-end of the memory sub-system, from host coupled to the memory sub-system;
• store the request in a buffer of the front-end of the memory sub-system;
• responsive to storing the request in the buffer, update a number of credits corresponding to a quantity of requests stored in the buffer;
• and
• responsive to determining that the quantity of requests less than a threshold and based on the indication indicating that the host is available to receive additional data, provide a response, from the front-end, comprising the number of credits to the host, wherein the credits indicate whether the host provides additional requests to the memory sub-system.