/*
* Copyright DataStax, Inc.
*
* 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 com.datastax.oss.driver.internal.core.channel;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
Optimizes the write operations on Netty channels.
Flush operations are generally speaking expensive as these may trigger a syscall on the
transport level. Thus it is in most cases (where write latency can be traded with throughput) a
good idea to try to minimize flush operations as much as possible. This component allows writes
to be accumulated and flushed together for better performance.
/**
* Optimizes the write operations on Netty channels.
*
* <p>Flush operations are generally speaking expensive as these may trigger a syscall on the
* transport level. Thus it is in most cases (where write latency can be traded with throughput) a
* good idea to try to minimize flush operations as much as possible. This component allows writes
* to be accumulated and flushed together for better performance.
*/
public interface WriteCoalescer {
Writes and flushes the message to the channel, possibly at a later time, but the order of
messages must be preserved.
/**
* Writes and flushes the message to the channel, possibly at a later time, but <b>the order of
* messages must be preserved</b>.
*/
ChannelFuture writeAndFlush(Channel channel, Object message);
}