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del[cache]: delete sizeCheckTimeAtomic

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godotg
2024-03-27 17:00:50 +08:00
parent 7fcf726371
commit 03d7996815
2 changed files with 10 additions and 17 deletions
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scheduler/src/main/java/com/zfoo/scheduler/util/LazyCache.java
+6 -16
View File
@@ -17,7 +17,6 @@ import java.util.function.BiConsumer;
public class LazyCache<K, V> {
private static final float DEFAULT_BACK_PRESSURE_FACTOR = 0.11f;
private static final long MILLIS_MAX_SIZE_CHECK_INTERVAL = 3;
private static class CacheValue<V> {
public volatile V value;
@@ -58,7 +57,6 @@ public class LazyCache<K, V> {
private long expireCheckIntervalMillis;
private volatile long minExpireTime;
private AtomicLong expireCheckTimeAtomic;
private AtomicLong sizeCheckTimeAtomic;
private ConcurrentMap<K, CacheValue<V>> cacheMap;
private BiConsumer<Pair<K, V>, RemovalCause> removeListener = (pair, removalCause) -> {
};
@@ -70,7 +68,6 @@ public class LazyCache<K, V> {
this.expireCheckIntervalMillis = expireCheckIntervalMillis;
this.minExpireTime = TimeUtils.now();
this.expireCheckTimeAtomic = new AtomicLong(TimeUtils.now() + expireCheckIntervalMillis);
this.sizeCheckTimeAtomic = new AtomicLong(TimeUtils.now());
this.cacheMap = new ConcurrentHashMap<>(Math.max(maximumSize / 16, 512));
if (removeListener != null) {
this.removeListener = removeListener;
@@ -136,19 +133,12 @@ public class LazyCache<K, V> {
// -----------------------------------------------------------------------------------------------------------------
private void checkMaximumSize() {
if (cacheMap.size() > backPressureSize) {
var currentTimeMillis = TimeUtils.currentTimeMillis();
var sizeCheckTime = sizeCheckTimeAtomic.get();
if (currentTimeMillis > sizeCheckTime) {
if (sizeCheckTimeAtomic.compareAndSet(sizeCheckTime, currentTimeMillis + MILLIS_MAX_SIZE_CHECK_INTERVAL)) {
var exceedList = cacheMap.entrySet()
.stream()
.map(it -> new PairLong<>(it.getValue().expireTime, it.getKey()))
.sorted((a, b) -> Long.compare(a.getKey(), b.getKey()))
.limit(Math.max(0, cacheMap.size() - maximumSize))
.toList();
exceedList.forEach(it -> removeForCause(it.getValue(), RemovalCause.SIZE));
}
}
cacheMap.entrySet()
.stream()
.map(it -> new PairLong<>(it.getValue().expireTime, it.getKey()))
.sorted((a, b) -> Long.compare(a.getKey(), b.getKey()))
.limit(Math.max(0, cacheMap.size() - maximumSize))
.forEach(it -> removeForCause(it.getValue(), RemovalCause.SIZE));
}
}
scheduler/src/test/java/com/zfoo/scheduler/util/LazyCacheTest.java
+4 -1
View File
@@ -127,7 +127,10 @@ public class LazyCacheTest {
}
});
}
ThreadUtils.sleep(Long.MAX_VALUE);
for (int i = 0; i < 10000; i++) {
logger.info("cache size:[{}]", lazyCache.size());
ThreadUtils.sleep(1000);
}
}
}