wondering what the best strategy to achieve atomic updates with LMDB.
what i am trying to achieve is a read then update atomic action given a highly concurrent
use case, for example, if a key/value pair represents a counter, how does one increment
or decrement the counter atomically.
i am pretty sure mdb_get -> mdv_set sequence is not atomic, wondering if mdb_cursor_get
-> mdv_cursor_put sequence is? perhaps a certain flag is required on the get action to
achieve a lock? in my bdb implementation i used lockers to achieve this.