private synchronized void finishProcessRequest() {
        if (clientsCount.decrementAndGet() <= 0) {
            proxyCache.shutdown();
            proxyCache = null;
        }
    }
Client for {@link HttpProxyCacheServer}

@author Alexey Danilov (danikula@gmail.com).
dkplayer-videocache/src/main/java/com/danikula/videocache/HttpProxyCacheServerClients.java