BITFIELD_RO
Syntax
BITFIELD_RO key [GET encoding offset [GET encoding offset ...]]
- Available since:
- 6.0.0
- Time complexity:
- O(1) for each subcommand specified
- ACL categories:
-
@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.
Examples
BITFIELD_RO hello GET i8 16