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