There's a 1/32 chance on instances duplicating work

[hashbender]

Since the instanceId is recommended to not be set, the algorithm generates a random 32 bit instanceId. This is left shifted 27 positions, which leaves 5 bits of randomness. On any given invocation, there's a 1/(2^5) chance of colliding with any other invocation.

For production use cases, it should be recommend that unique instanceIds are provided.