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A quick developing framewort for internet company
/**
* Copyright (C) 2016 - 2030 youtongluan.
*
* 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.yx.http.user;
import java.util.Iterator;
import java.util.Map;
import org.slf4j.Logger;
import org.yx.log.Log;
public final class CacheHelper {
public static void expire(Map map, long duration) {
Logger log = Log.get("sumk.http.session");
try {
expire0(map, duration, log);
} catch (Exception e) {
log.error(e.getMessage(), e);
}
}
private static void expire0(Map map, long duration, Logger log) {
int beginSize = map.size();
long begin = System.currentTimeMillis() - duration;
Iterator> it = map.entrySet().iterator();
while (it.hasNext()) {
Map.Entry en = it.next();
if (en == null) {
continue;
}
TimedCachedObject t = en.getValue();
if (t == null) {
continue;
}
if (t.refreshTime < begin) {
log.trace("{} remove from cache", en.getKey());
it.remove();
}
}
if (log.isTraceEnabled()) {
log.trace("catch size from {} to {},duration:{}", beginSize, map.size(), duration);
}
}
}
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