Example usage for com.google.common.cache CacheBuilder initialCapacity

Introduction

In this page you can find the example usage for com.google.common.cache CacheBuilder initialCapacity.

Prototype

int initialCapacity

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Usage

From source file:no.digipost.cache.inmemory.CacheConfig.java

public static CacheConfig initialCapacity(final int initCapacity) {
    return new CacheConfig() {
        @Override//w ww.j  av  a  2 s .  com
        public CacheBuilder<Object, Object> configure(CacheBuilder<Object, Object> builder) {
            LOG.info("Initial capacity = {}", initCapacity);
            return builder.initialCapacity(initCapacity);
        }
    };
}

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From source file:com.davidbracewell.cache.impl.GuavaCacheUtils.java

/**
 * Converts a CacheSpec into a CacheBuilder
 *
 * @param specification The specification
 * @param <K>           The key type
 * @param <V>           The value type
 * @return The CacheBuilder/*from  ww w.ja v a2  s .  c om*/
 */
public static <K, V> CacheBuilder<K, V> cacheBuilderFromSpec(CacheSpec<K, V> specification) {
    CacheBuilder cacheBuilder = CacheBuilder.newBuilder();
    if (specification.getMaxSize() > 0) {
        cacheBuilder.maximumSize(specification.getMaxSize());
    }
    if (specification.getConcurrencyLevel() > 0) {
        cacheBuilder.concurrencyLevel(specification.getMaxSize());
    }
    if (specification.getInitialCapacity() > 0) {
        cacheBuilder.initialCapacity(specification.getInitialCapacity());
    }
    if (specification.getExpiresAfterAccess() > 0) {
        cacheBuilder.expireAfterAccess(specification.getExpiresAfterAccess(), TimeUnit.MILLISECONDS);
    }
    if (specification.getExpiresAfterWrite() > 0) {
        cacheBuilder.expireAfterWrite(specification.getExpiresAfterWrite(), TimeUnit.MILLISECONDS);
    }
    if (specification.isWeakKeys()) {
        cacheBuilder.weakKeys();
    }
    if (specification.isWeakValues()) {
        cacheBuilder.weakValues();
    }
    return Cast.as(cacheBuilder);
}

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From source file:org.locationtech.geogig.storage.cache.SharedCache.java

@VisibleForTesting
static SharedCache build(int L1capacity, long maxCacheSizeBytes) {
    checkArgument(L1capacity >= 0);/*from w  w  w  .  j a v a 2s .  c o m*/
    checkArgument(maxCacheSizeBytes >= 0, "Cache size can't be < 0, 0 meaning no cache at all");

    if (0L == maxCacheSizeBytes) {
        return NO_CACHE;
    }

    int initialCapacityCount = 1_000_000;
    int concurrencyLevel = 16;

    CacheBuilder<Object, Object> cacheBuilder = CacheBuilder.newBuilder();
    cacheBuilder = cacheBuilder.maximumWeight(maxCacheSizeBytes);
    cacheBuilder.weigher(Impl.SizeTracker.WEIGHER);

    cacheBuilder.initialCapacity(initialCapacityCount);
    cacheBuilder.concurrencyLevel(concurrencyLevel);
    cacheBuilder.recordStats();

    Impl.SizeTracker sizeTracker = new Impl.SizeTracker();
    cacheBuilder.removalListener(sizeTracker);

    Cache<Key, byte[]> byteCache = cacheBuilder.build();

    return new Impl(L1capacity, byteCache, sizeTracker);
}

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From source file:org.locationtech.geogig.storage.postgresql.PGCache.java

private static PGCache build(Integer initialCapacityCount, Integer concurrencyLevel2, Long maxWeightBytes,
        Optional<Integer> expireSeconds) {
    CacheBuilder<Object, Object> cacheBuilder = CacheBuilder.newBuilder();
    cacheBuilder = cacheBuilder.maximumWeight(maxWeightBytes);
    cacheBuilder.weigher(weigher);/*  w  ww. j  a  v  a2  s  .co  m*/
    if (expireSeconds.isPresent()) {
        long seconds = expireSeconds.get();
        Preconditions.checkArgument(seconds > -1);
        cacheBuilder.expireAfterAccess(seconds, TimeUnit.SECONDS);
    }
    cacheBuilder.initialCapacity(initialCapacityCount);
    cacheBuilder.concurrencyLevel(concurrencyLevel2);
    cacheBuilder.recordStats();

    SizeTracker sizeTracker = new SizeTracker();
    cacheBuilder.removalListener(sizeTracker);

    Cache<ObjectId, byte[]> byteCache = cacheBuilder.build();

    return new PGCache(byteCache, sizeTracker);
}

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From source file:com.github.benmanes.caffeine.cache.testing.GuavaLocalCache.java

/** Returns a Guava-backed cache. */
@SuppressWarnings("CheckReturnValue")
public static <K, V> Cache<K, V> newGuavaCache(CacheContext context) {
    checkState(!context.isAsync(), "Guava caches are synchronous only");

    CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
    if (context.initialCapacity != InitialCapacity.DEFAULT) {
        builder.initialCapacity(context.initialCapacity.size());
    }//from ww w.ja  va2  s. c om
    if (context.isRecordingStats()) {
        builder.recordStats();
    }
    if (context.maximumSize != MaximumSize.DISABLED) {
        if (context.weigher == CacheWeigher.DEFAULT) {
            builder.maximumSize(context.maximumSize.max());
        } else {
            builder.weigher(new GuavaWeigher<Object, Object>(context.weigher));
            builder.maximumWeight(context.maximumWeight());
        }
    }
    if (context.afterAccess != Expire.DISABLED) {
        builder.expireAfterAccess(context.afterAccess.timeNanos(), TimeUnit.NANOSECONDS);
    }
    if (context.afterWrite != Expire.DISABLED) {
        builder.expireAfterWrite(context.afterWrite.timeNanos(), TimeUnit.NANOSECONDS);
    }
    if (context.refresh != Expire.DISABLED) {
        builder.refreshAfterWrite(context.refresh.timeNanos(), TimeUnit.NANOSECONDS);
    }
    if (context.expires() || context.refreshes()) {
        builder.ticker(context.ticker());
    }
    if (context.keyStrength == ReferenceType.WEAK) {
        builder.weakKeys();
    } else if (context.keyStrength == ReferenceType.SOFT) {
        throw new IllegalStateException();
    }
    if (context.valueStrength == ReferenceType.WEAK) {
        builder.weakValues();
    } else if (context.valueStrength == ReferenceType.SOFT) {
        builder.softValues();
    }
    if (context.removalListenerType != Listener.DEFAULT) {
        boolean translateZeroExpire = (context.afterAccess == Expire.IMMEDIATELY)
                || (context.afterWrite == Expire.IMMEDIATELY);
        builder.removalListener(new GuavaRemovalListener<>(translateZeroExpire, context.removalListener));
    }
    Ticker ticker = (context.ticker == null) ? Ticker.systemTicker() : context.ticker;
    if (context.loader == null) {
        context.cache = new GuavaCache<>(builder.<Integer, Integer>build(), ticker);
    } else if (context.loader().isBulk()) {
        context.cache = new GuavaLoadingCache<>(
                builder.build(new BulkLoader<Integer, Integer>(context.loader())), ticker);
    } else {
        context.cache = new GuavaLoadingCache<>(
                builder.build(new SingleLoader<Integer, Integer>(context.loader())), ticker);
    }
    @SuppressWarnings("unchecked")
    Cache<K, V> castedCache = (Cache<K, V>) context.cache;
    return castedCache;
}

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From source file:com.github.benmanes.caffeine.cache.testing.GuavaCacheFromContext.java

/** Returns a Guava-backed cache. */
@SuppressWarnings("CheckReturnValue")
public static <K, V> Cache<K, V> newGuavaCache(CacheContext context) {
    checkState(!context.isAsync(), "Guava caches are synchronous only");

    CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
    context.guava = builder;/*ww w.  ja v  a 2s  .c  om*/

    builder.concurrencyLevel(1);
    if (context.initialCapacity != InitialCapacity.DEFAULT) {
        builder.initialCapacity(context.initialCapacity.size());
    }
    if (context.isRecordingStats()) {
        builder.recordStats();
    }
    if (context.maximumSize != Maximum.DISABLED) {
        if (context.weigher == CacheWeigher.DEFAULT) {
            builder.maximumSize(context.maximumSize.max());
        } else {
            builder.weigher(new GuavaWeigher<Object, Object>(context.weigher));
            builder.maximumWeight(context.maximumWeight());
        }
    }
    if (context.afterAccess != Expire.DISABLED) {
        builder.expireAfterAccess(context.afterAccess.timeNanos(), TimeUnit.NANOSECONDS);
    }
    if (context.afterWrite != Expire.DISABLED) {
        builder.expireAfterWrite(context.afterWrite.timeNanos(), TimeUnit.NANOSECONDS);
    }
    if (context.refresh != Expire.DISABLED) {
        builder.refreshAfterWrite(context.refresh.timeNanos(), TimeUnit.NANOSECONDS);
    }
    if (context.expires() || context.refreshes()) {
        builder.ticker(context.ticker());
    }
    if (context.keyStrength == ReferenceType.WEAK) {
        builder.weakKeys();
    } else if (context.keyStrength == ReferenceType.SOFT) {
        throw new IllegalStateException();
    }
    if (context.valueStrength == ReferenceType.WEAK) {
        builder.weakValues();
    } else if (context.valueStrength == ReferenceType.SOFT) {
        builder.softValues();
    }
    if (context.removalListenerType != Listener.DEFAULT) {
        boolean translateZeroExpire = (context.afterAccess == Expire.IMMEDIATELY)
                || (context.afterWrite == Expire.IMMEDIATELY);
        builder.removalListener(new GuavaRemovalListener<>(translateZeroExpire, context.removalListener));
    }
    Ticker ticker = (context.ticker == null) ? Ticker.systemTicker() : context.ticker;
    if (context.loader == null) {
        context.cache = new GuavaCache<>(builder.<Integer, Integer>build(), ticker, context.isRecordingStats());
    } else if (context.loader().isBulk()) {
        context.cache = new GuavaLoadingCache<>(
                builder.build(new BulkLoader<Integer, Integer>(context.loader())), ticker,
                context.isRecordingStats());
    } else {
        context.cache = new GuavaLoadingCache<>(
                builder.build(new SingleLoader<Integer, Integer>(context.loader())), ticker,
                context.isRecordingStats());
    }
    @SuppressWarnings("unchecked")
    Cache<K, V> castedCache = (Cache<K, V>) context.cache;
    return castedCache;
}

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From source file:com.baidu.oped.apm.profiler.metadata.LRUCache.java

public LRUCache(int maxCacheSize) {
    final CacheBuilder<Object, Object> cacheBuilder = CacheBuilder.newBuilder();
    cacheBuilder.concurrencyLevel(32);/*from  w ww. j av  a 2  s  .  com*/
    cacheBuilder.initialCapacity(maxCacheSize);
    cacheBuilder.maximumSize(maxCacheSize);
    Cache<T, Object> localCache = cacheBuilder.build();
    this.cache = localCache.asMap();
}

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From source file:com.navercorp.pinpoint.profiler.metadata.SimpleCache.java

private ConcurrentMap<T, Result> createCache(int maxCacheSize) {
    final CacheBuilder<Object, Object> cacheBuilder = CacheBuilder.newBuilder();
    cacheBuilder.concurrencyLevel(64);//from  www.j  av a  2 s  .  co m
    cacheBuilder.initialCapacity(maxCacheSize);
    cacheBuilder.maximumSize(maxCacheSize);
    Cache<T, Result> localCache = cacheBuilder.build();
    ConcurrentMap<T, Result> cache = localCache.asMap();
    return cache;
}

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From source file:com.navercorp.pinpoint.profiler.context.active.ActiveTraceRepository.java

private ConcurrentMap<Long, ActiveTrace> createCache(int maxActiveTraceSize) {
    final CacheBuilder<Object, Object> cacheBuilder = CacheBuilder.newBuilder();
    cacheBuilder.concurrencyLevel(64);/*from   w  w  w.j  av  a2s  .c o m*/
    cacheBuilder.initialCapacity(maxActiveTraceSize);
    cacheBuilder.maximumSize(maxActiveTraceSize);
    // OOM defense
    cacheBuilder.weakValues();

    final Cache<Long, ActiveTrace> localCache = cacheBuilder.build();
    return localCache.asMap();
}

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From source file:org.eclipse.osee.cache.admin.internal.CacheFactory.java

private CacheBuilder<Object, Object> createCacheBuilder(CacheConfiguration config) {
    CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
    if (config.hasInitialCapacity()) {
        builder = builder.initialCapacity(config.getInitialCapacity());
    }/*from w  w  w .  ja v a 2 s  .com*/
    if (config.hasMaximumSize()) {
        builder = builder.maximumSize(config.getMaximumSize());
    }
    if (config.isExpireAfterAccess()) {
        Pair<Long, TimeUnit> data = config.getExpireAfterAccess();
        builder = builder.expireAfterAccess(data.getFirst(), data.getSecond());
    }
    if (config.isExpireAfterWrite()) {
        Pair<Long, TimeUnit> data = config.getExpireAfterWrite();
        builder = builder.expireAfterWrite(data.getFirst(), data.getSecond());
    }
    if (config.isRefreshAfterWrite()) {
        Pair<Long, TimeUnit> data = config.getRefreshAfterWrite();
        builder = builder.refreshAfterWrite(data.getFirst(), data.getSecond());
    }
    return builder;
}

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