Este código es algo que puedes usar realmente en tu aplicación, guardar los hashes de las contraseñas en tu base de datos, etc.

Vamos a empezar desde donde lo dejamos en el capítulo anterior e incrementarlo.

## Acerca de JWT { #about-jwt }

JWT significa "JSON Web Tokens".

Es un estándar para codificar un objeto JSON en un string largo y denso sin espacios. Se ve así:

```

    /**
     * Checks if the cache has pending changes
     * @return true if cache has changes
     */
    public boolean hasChanges() {
        return hasChanges;
    }

    /**
     * Get and increment inconsistency count
     *
     * @return the current inconsistency count
     */
    public int getInconsistencyCount() {
        return inconsistencyCount.getAndIncrement();
    }

    /**

			st.Status = s.Status
			return nil
		}
		sm.resyncStatus[s.ResyncID] = st
		return saveSiteResyncMetadata(GlobalContext, st, newObjectLayerFn())
	}
	return nil
}

// increment SyncedBuckets count
func (sm *siteResyncMetrics) incBucket(o resyncOpts, bktStatus ResyncStatusType) {
	if !globalSiteReplicationSys.isEnabled() {
		return
	}
	sm.Lock()
	defer sm.Unlock()

		duration := time.Since(startTime)

		atomic.AddUint64(&p.operations[s], 1)
		if s < scannerMetricLastRealtime {
			p.latency[s].addSize(duration, int64(sz))
		}
	}
}

// incTime will increment time on metric s with a specific duration.
// Use for s < scannerMetricLastRealtime
func (p *scannerMetrics) incTime(s scannerMetric, d time.Duration) {
	atomic.AddUint64(&p.operations[s], 1)

    @Test
    public void test_statsObjectIncrementDecrement() {
        StatsObject statsObject = new StatsObject();
        assertEquals(1, statsObject.count.get());

        assertEquals(2, statsObject.increment());
        assertEquals(2, statsObject.count.get());

        assertEquals(1, statsObject.decrement());
        assertEquals(1, statsObject.count.get());

        assertEquals(0, statsObject.decrement());

    private final AtomicLong leaseBreaks = new AtomicLong();
    private final AtomicLong leaseUpgrades = new AtomicLong();
    private final AtomicLong leaseDowngrades = new AtomicLong();
    
    // Getters and increment methods
}
```

## 12. Future Enhancements

1. **Directory Leases**: Extend lease support for directories
2. **Lease Key Persistence**: Save lease keys for reconnection

			}
			m.addErrorNonBlockingClose(errResp, context.Cause(m.ctx))
			return
		case <-pingTimer:
			errState = !m.doPing(errResp)
		}
	}
}

// checkSeq will check if sequence number is correct and increment it by 1.
func (m *muxClient) checkSeq(seq uint32) (ok bool) {
	if seq != m.RecvSeq {
		if debugPrint {
			fmt.Printf("MuxID: %d client, expected sequence %d, got %d\n", m.MuxID, m.RecvSeq, seq)
		}

            .removalListener(countingListener)
            .ticker(fakeTicker)
            .maximumSize(2)
            .build();

    // Add more than two elements to increment size removals.
    cache.put(3, 20);
    cache.put(6, 2);
    cache.put(98, 45);
    cache.put(56, 76);
    cache.put(23, 84);

    // Replace the two present elements.
    cache.put(23, 20);

     */
    protected CrawlerContext crawlerContext;

    /**
     * Flag indicating whether to wait on folder operations.
     */
    protected boolean noWaitOnFolder = false;

    /**
     * Increments the active thread count using atomic operation.
     */
    protected void startCrawling() {
        crawlerContext.incrementAndGetActiveThreadCount();
    }

    /**

  @GwtIncompatible // StrictMath
  @SuppressWarnings("strictfp") // Guava still supports Java 8
  private strictfp double trueLog2(double d) {
    double trueLog2 = StrictMath.log(d) / StrictMath.log(2);
    // increment until it's >= the true value
    while (StrictMath.pow(2.0, trueLog2) < d) {
      trueLog2 = StrictMath.nextUp(trueLog2);
    }
    // decrement until it's <= the true value