Read-only variant of the SORT command. It is exactly like the original SORT but refuses the STORE option and can safely be used in read-only replicas.
Since the original SORT has a STORE option it is technically flagged as a writing command in the Valkey command table. For this reason read-only replicas in a Valkey Cluster will redirect it to the primary instance even if the connection is in read-only mode (see the READONLY command of Valkey Cluster).
The SORT_RO variant was introduced in order to allow SORT behavior in read-only replicas without breaking compatibility on command flags.
See original SORT for more details.
Examples
SORT_RO mylist BY weight_*->fieldname GET object_*->fieldname
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