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replica_policy.go
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replica_policy.go
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/*
* Copyright 2013-2017 Aerospike, Inc.
*
* Portions may be licensed to Aerospike, Inc. under one or more contributor
* license agreements.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package aerospike
// ReplicaPolicy defines type of node partition targeted by read commands.
type ReplicaPolicy int
const (
// MASTER reads from node containing key's master partition.
// This is the default behavior.
MASTER ReplicaPolicy = iota
// MASTER_PROLES Distributes reads across nodes containing key's master and replicated partitions
// in round-robin fashion. This option requires ClientPolicy.RequestProleReplicas
// to be enabled in order to function properly.
MASTER_PROLES
// Distribute reads across all nodes in cluster in round-robin fashion.
// This option is useful when the replication factor equals the number
// of nodes in the cluster and the overhead of requesting proles is not desired.
RANDOM
// SEQUENCE Tries node containing master partition first.
// If connection fails, all commands try nodes containing replicated partitions.
// If socketTimeout is reached, reads also try nodes containing replicated partitions,
// but writes remain on master node.
//
// This option requires ClientPolicy.RequestProleReplicas to be enabled
// in order to function properly.
SEQUENCE
)