io.atomix.resource.ReadConsistency Maven / Gradle / Ivy
/*
* Copyright 2016 the original author or authors.
*
* 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
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package io.atomix.resource;
import io.atomix.copycat.Query;
/**
* Constants for controlling read consistency constraints on a per-request basis.
*
* Read consistency levels dictate how queries should be evaluated in the Atomix cluster. Resources generally have
* significantly greater flexibility in controlling the consistency level of reads because Raft allows reads from
* leaders or followers. Consistency levels can be applied on a per-command basis or to all operations for a given
* resource.
*
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