Reference documentation and code samples for the Cloud Spanner V1 Client class ReplicaType.
Indicates the type of replica. See the replica types documentation for more details.
Protobuf type google.spanner.admin.instance.v1.ReplicaInfo.ReplicaType
Namespace
Google \ Cloud \ Spanner \ Admin \ Instance \ V1 \ ReplicaInfoMethods
static::name
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static::value
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Constants
TYPE_UNSPECIFIED
Value: 0
Not specified.
Generated from protobuf enum TYPE_UNSPECIFIED = 0;
READ_WRITE
Value: 1
Read-write replicas support both reads and writes. These replicas:
Maintain a full copy of your data.
Serve reads.
- Can vote whether to commit a write.
- Participate in leadership election.
- Are eligible to become a leader.
Generated from protobuf enum READ_WRITE = 1;
READ_ONLY
Value: 2
Read-only replicas only support reads (not writes). Read-only replicas:
Maintain a full copy of your data.
Serve reads.
- Do not participate in voting to commit writes.
- Are not eligible to become a leader.
Generated from protobuf enum READ_ONLY = 2;
WITNESS
Value: 3
Witness replicas don't support reads but do participate in voting to commit writes. Witness replicas:
Do not maintain a full copy of data.
Do not serve reads.
- Vote whether to commit writes.
- Participate in leader election but are not eligible to become leader.
Generated from protobuf enum WITNESS = 3;