Comments (1)
@njacob1001
Not author, but i think i got an idea why mutex
is required.
https://github.com/jaevor/go-nanoid/blob/master/nanoid.go#L75C2-L82
b
and id
is pre-allocated (it is outside the returned generator func) and is shared between runs for performance, hence the need of mutex.
b
is a pool of random bytes that get used to create id
, and the offset
is tracking how much bytes had been used.
Here is is being refilled once b
is used up
https://github.com/jaevor/go-nanoid/blob/master/nanoid.go#L91-L94
the same generator might be run in two concurrent goroutine and result in race condition since it shares the states
from go-nanoid.
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from go-nanoid.