EVALSHA_RO sha1 numkeys key [key ...] arg [arg ...]

This is a read-only variant of the EVALSHA command that cannot execute commands that modify data.

Unlike EVALSHA, scripts executed with this command can always be killed and never affect the replication stream. Because it can only read data, this command can always be executed on a master or a replica.

For more information about EVALSHA scripts please refer to Introduction to Eval Scripts.