A technique includes identifying an address of a head end of a queue and
monitoring a coherent interconnect to identify a data transfer that is
communicated by a producer, which targets the address. The technique
includes storing the data of the data transfer in the queue and
selectively storing at least a portion of the data in a head-of-queue
cache memory based at least in part on whether the monitoring identifies
the address. At least a portion of the data is selectively retrieved from
the head-of-queue cache memory instead of from the queue for transmission
to a consumer.