Example usage for org.apache.http.impl.client.cache CacheConfig.Builder setAsynchronousWorkersCore

Introduction

In this page you can find the example usage for org.apache.http.impl.client.cache CacheConfig.Builder setAsynchronousWorkersCore.

Prototype

public void setAsynchronousWorkersCore(int min) 

Source Link

Document

Sets the minimum number of threads to keep alive for background revalidations due to the stale-while-revalidate directive.

Usage

From source file:org.esigate.cache.CacheConfigHelper.java

public static CacheConfig createCacheConfig(Properties properties) {

    // Heuristic caching
    boolean heuristicCachingEnabled = Parameters.HEURISTIC_CACHING_ENABLED.getValue(properties);
    float heuristicCoefficient = Parameters.HEURISTIC_COEFFICIENT.getValue(properties);
    long heuristicDefaultLifetimeSecs = Parameters.HEURISTIC_DEFAULT_LIFETIME_SECS.getValue(properties);
    int maxCacheEntries = Parameters.MAX_CACHE_ENTRIES.getValue(properties);
    long maxObjectSize = Parameters.MAX_OBJECT_SIZE.getValue(properties);

    // Asynchronous revalidation
    int minAsynchronousWorkers = Parameters.MIN_ASYNCHRONOUS_WORKERS.getValue(properties);
    int maxAsynchronousWorkers = Parameters.MAX_ASYNCHRONOUS_WORKERS.getValue(properties);
    int asynchronousWorkerIdleLifetimeSecs = Parameters.ASYNCHRONOUS_WORKER_IDLE_LIFETIME_SECS
            .getValue(properties);/*from w  w  w . ja  v  a  2 s . c  o  m*/
    int maxUpdateRetries = Parameters.MAX_UPDATE_RETRIES.getValue(properties);
    int revalidationQueueSize = Parameters.REVALIDATION_QUEUE_SIZE.getValue(properties);

    CacheConfig.Builder builder = CacheConfig.custom();
    builder.setHeuristicCachingEnabled(heuristicCachingEnabled);
    builder.setHeuristicCoefficient(heuristicCoefficient);
    builder.setHeuristicDefaultLifetime(heuristicDefaultLifetimeSecs);
    builder.setMaxCacheEntries(maxCacheEntries);
    long usedMaxObjectSize = Long.MAX_VALUE;
    if (maxObjectSize > 0) {
        usedMaxObjectSize = maxObjectSize;
    }
    builder.setMaxObjectSize(usedMaxObjectSize);
    builder.setAsynchronousWorkersCore(minAsynchronousWorkers);
    builder.setAsynchronousWorkersMax(maxAsynchronousWorkers);
    builder.setAsynchronousWorkerIdleLifetimeSecs(asynchronousWorkerIdleLifetimeSecs);
    builder.setMaxUpdateRetries(maxUpdateRetries).setRevalidationQueueSize(revalidationQueueSize);
    builder.setSharedCache(true);
    return builder.build();
}

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