Usage:

flushctl Usage:
flushctl host:port evict key or
flushctl host:port set param value or
flushctl host:port start or
flushctl host:port stop

Available params:

min_data_age - minimum data age before flushing data
queue_age_cap - maximum queue age before flushing data
max_txn_size - maximum number of items in a flusher transaction
bg_fetch_delay - delay before executing a bg fetch (test feature)
max_size - max memory used by the server
mem_high_wat - high water mark
mem_low_wat - low water mark