com.googlecode.concurrentlinkedhashmap.Weigher Java Examples

The following examples show how to use com.googlecode.concurrentlinkedhashmap.Weigher. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: SerializingCache.java    From stratio-cassandra with Apache License 2.0 6 votes vote down vote up 
private SerializingCache(long capacity, Weigher<RefCountedMemory> weigher, ISerializer<V> serializer)
{
    this.serializer = serializer;

    EvictionListener<K,RefCountedMemory> listener = new EvictionListener<K, RefCountedMemory>()
    {
        public void onEviction(K k, RefCountedMemory mem)
        {
            mem.unreference();
        }
    };

    this.map = new ConcurrentLinkedHashMap.Builder<K, RefCountedMemory>()
               .weigher(weigher)
               .maximumWeightedCapacity(capacity)
               .concurrencyLevel(DEFAULT_CONCURENCY_LEVEL)
               .listener(listener)
               .build();
}
Example #2
Source File: IndexBlock.java    From heftydb with Apache License 2.0 6 votes vote down vote up 
public Cache(long maxSize, Metrics metrics) {
    cache = new TableBlockCache<IndexBlock>(maxSize, new Weigher<IndexBlock>() {
        @Override
        public int weightOf(IndexBlock indexRecord) {
            return indexRecord.memory().size();
        }
    });

    metrics.gauge("cache.indexBlock.entrySize", new Gauge<Long>() {
        @Override
        public Long getValue() {
            return cache.totalEntrySize();
        }
    });

    metrics.gauge("cache.indexBlock.utilizationRate", new Gauge<Double>() {
        @Override
        public Double getValue() {
            return cache.utilizationRate();
        }
    });
}
Example #3
Source File: TupleBlock.java    From heftydb with Apache License 2.0 6 votes vote down vote up 
public Cache(long maxSize, Metrics metrics) {
    cache = new TableBlockCache<TupleBlock>(maxSize, new Weigher<TupleBlock>() {
        @Override
        public int weightOf(TupleBlock tuple) {
            return tuple.memory().size();
        }
    });

    metrics.gauge("cache.tupleBlock.entrySize", new Gauge<Long>() {
        @Override
        public Long getValue() {
            return cache.totalEntrySize();
        }
    });

    metrics.gauge("cache.tupleBlock.utilizationRate", new Gauge<Double>() {
        @Override
        public Double getValue() {
            return cache.utilizationRate();
        }
    });
}
Example #4
Source File: TableBlockCache.java    From heftydb with Apache License 2.0 5 votes vote down vote up 
public TableBlockCache(long maxSize, Weigher<T> weigher) {
    cache = new ConcurrentLinkedHashMap.Builder<Entry, T>().concurrencyLevel(CONCURRENCY_LEVEL).weigher(weigher)
            .listener(new EvictionListener<Entry, T>() {
        @Override
        public void onEviction(Entry key, T value) {
            totalSize.addAndGet(-(value.memory().size()));
            value.memory().release();
        }
    }).maximumWeightedCapacity(maxSize).build();
    this.maxSize = maxSize;
}
Example #5
Source File: SerializingCache.java    From stratio-cassandra with Apache License 2.0 4 votes vote down vote up 
public static <K, V> SerializingCache<K, V> create(long weightedCapacity, Weigher<RefCountedMemory> weigher, ISerializer<V> serializer)
{
    return new SerializingCache<>(weightedCapacity, weigher, serializer);
}