?? serverloadmonitor.java
字號:
/*
* Copyright 2005 Joe Walker
*
* 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 org.directwebremoting;
/**
* Polling or Comet style interactive web applications require something to
* monitor high levels of server load to ensure that
* @author Joe Walker [joe at getahead dot ltd dot uk]
*/
public interface ServerLoadMonitor
{
/**
* Controller for poll times.
* @return How long should this client wait until it next polls?
*/
int timeToNextPoll();
/**
* How long should we hold up a client request before starting a
* response stream while waiting for some scripts come in.
* @return The time in millis to wait before opening an Ajax poll response stream.
*/
long timeWithinPollPreStream();
/**
* How long should we hold up a client request after starting
* a response stream while waiting for more scripts
* come in.
* @return The time in millis to wait before closing an Ajax poll response stream
*/
long timeWithinPollPostStream();
}
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