BITFIELD_RO key [GET encoding offset [GET encoding offset ...]]
@read,
@bitmap,
@fast,
Read-only variant of the BITFIELD command.
It is like the original BITFIELD but only accepts GET subcommand and can safely be used in read-only replicas.
Since the original BITFIELD has SET and INCRBY options it is technically flagged as a writing command in the Redis command table.
For this reason read-only replicas in a Redis Cluster will redirect it to the master instance even if the connection is in read-only mode (see the READONLY command of Redis Cluster).
Since Redis 6.2, the BITFIELD_RO variant was introduced in order to allow BITFIELD behavior in read-only replicas without breaking compatibility on command flags.
See original BITFIELD for more details.
BITFIELD_RO hello GET i8 16
| Redis Enterprise |
Redis Cloud |
Notes |
|---|---|---|
| ✅ Standard ✅ Active-Active |
✅ Standard ✅ Active-Active |