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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.
Please refer to the `EVAL` documentation for detailed information about Redis
Lua scripting.
@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, an 1 is returned, otherwise 0 is
returned.
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