create a listener for mempool
It watches the MB size of pending blocks
it should notify based on the last notification sent.
"mempool is growing" if 9MB larger than last notice
"mempool is shrinking" if 9MB smaller than last notice
"mempool is empty" if <3MB and last notification was >3MB
create a listener for mempool It watches the MB size of pending blocks it should notify based on the last notification sent. "mempool is growing" if 9MB larger than last notice "mempool is shrinking" if 9MB smaller than last notice "mempool is empty" if <3MB and last notification was >3MB