Examples of com.leansoft.bigqueue.FanOutQueueImpl$QueueFront

com.leansoft.bigqueue.FanOutQueueImpl

A big, fast and persistent queue implementation supporting fan out semantics. Main features: 1. FAST : close to the speed of direct memory access, both enqueue and dequeue are close to O(1) memory access. 2. MEMORY-EFFICIENT : automatic paging & swapping algorithm, only most-recently accessed data is kept in memory. 3. THREAD-SAFE : multiple threads can concurrently enqueue and dequeue without data corruption. 4. PERSISTENT - all data in queue is persisted on disk, and is crash resistant. 5. BIG(HUGE) - the total size of the queued data is only limited by the available disk space. 6. FANOUT - support fan out semantics, multiple consumers can independently consume a single queue without intervention, everyone has its own queue front index. 7. CLIENT MANAGED INDEX - support access by index and the queue index is managed at client side. @author bulldog

    
  }
  
  @Test
  public void runTest() throws Exception {
    foQueue = new FanOutQueueImpl(testDir, "load_test_one");
    
    System.out.println("Load test begin ...");
    for(int i = 0; i < loop; i++) {
      System.out.println("[doRunProduceThenConsume] round " + (i + 1) + " of " + loop);
      this.doRunProduceThenConsume();
      
      // reset
      foQueue.removeAll();
    }
    
    foQueue.close();
    foQueue = new FanOutQueueImpl(testDir, "load_test_two");
    
    for(int i = 0; i < loop; i++) {
      System.out.println("[doRunMixed] round " + (i + 1) + " of " + loop);
      this.doRunMixed();

  public void demo() throws IOException {
    IFanOutQueue foQueue = null;
    
    try {
      // create a new fanout queue
      foQueue = new FanOutQueueImpl("d:/tutorial/fanout-queue", "demo");
      
      // enqueue some logs
      for(int i = 0; i < 10; i++) {
        String log = "log-" + i;
        foQueue.enqueue(log.getBytes());

Examples of com.leansoft.bigqueue.FanOutQueueImpl$QueueFront

Related Classes of com.leansoft.bigqueue.FanOutQueueImpl$QueueFront