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Returns information about the existence of the scripts in the script cache.
This command accepts one or more SHA1 digests and returns a list of ones or
zeros to signal if the scripts are already defined or not inside the script
cache.
This can be useful before a pipelining operation to ensure that scripts are
loaded (and if not, to load them using `SCRIPT LOAD`) so that the pipelining
operation can be performed solely using `EVALSHA` instead of `EVAL` to save
bandwidth.
For more information about `EVAL` scripts please refer to [Introduction to Eval Scripts](/topics/eval-intro).
@return
@array-reply The command returns an array of integers that correspond to
the specified SHA1 digest arguments.
For every corresponding SHA1 digest of a script that actually exists in the
script cache, a 1 is returned, otherwise 0 is returned.
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