///

## Reduce duplication { #reduce-duplication }

Reducing code duplication is one of the core ideas in **FastAPI**.

As code duplication increments the chances of bugs, security issues, code desynchronization issues (when you update in one place but not in the others), etc.

And these models are all sharing a lot of the data and duplicating attribute names and types.

         *
         * @return true if should retry
         */
        public boolean shouldRetry() {
            return retryCount < 3;
        }

        /**
         * Increment retry count and update next retry time
         */
        public void incrementRetry() {
            retryCount++;
            // Exponential backoff: 1s, 2s, 4s

	startTime := time.Now()
	return func() {
		duration := time.Since(startTime)

		atomic.AddUint64(&o.operations[s], 1)
		o.latency[s].add(duration)
	}
}

// incTime will increment time on metric s with a specific duration.
func (o *osMetrics) incTime(s osMetric, d time.Duration) {
	atomic.AddUint64(&o.operations[s], 1)
	o.latency[s].add(d)
}

	atomic.AddInt64(&v.nowCount, -1)
	r.qCache.bucketStats[bucket] = v

	atomic.AddInt64(&r.qCache.srQueueStats.nowBytes, -1*sz)
	atomic.AddInt64(&r.qCache.srQueueStats.nowCount, -1)
}

// incProxy increments proxy metrics for proxied calls
func (r *ReplicationStats) incProxy(bucket string, api replProxyAPI, isErr bool) {
	if r != nil {
		r.pCache.inc(bucket, api, isErr)
	}
}

        }

        /* The message provided to batch has a batchLimit that is
         * higher than the current batchLevel so we will now encode
         * that chained message. Before doing so we must increment
         * the batchLevel of the andx message in case it itself is an
         * andx message and needs to perform the same check as above.
         */

        andx.batchLevel = batchLevel + 1;

			Typeflag: '2',
			Format:   FormatGNU,
		}},
	}, {
		// GNU tar file with atime and ctime fields set.
		// Created with the GNU tar v1.27.1.
		//	tar --incremental -S -cvf gnu-incremental.tar test2
		file: "testdata/gnu-incremental.tar",
		headers: []*Header{{
			Name:       "test2/",
			Mode:       16877,
			Uid:        1000,
			Gid:        1000,
			Size:       14,

    }

    @Test
    @DisplayName("checkRelease(): when connected and usage>0 performs check without throwing")
    void checkRelease_connectedAndInUse_doesNotThrow() {
        // Arrange: spy isConnected() to return true; increment usage via acquire()
        CIFSContext ctx = mock(CIFSContext.class);
        SmbTreeConnectionTrace trace = Mockito.spy(new SmbTreeConnectionTrace(ctx));
        doReturn(true).when(trace).isConnected();

Este código é algo que você pode realmente usar na sua aplicação, salvar os hashes das senhas no seu banco de dados, etc.

Vamos começar de onde paramos no capítulo anterior e incrementá-lo.

## Sobre o JWT

JWT significa "JSON Web Tokens".

É um padrão para codificar um objeto JSON em uma string longa e densa sem espaços. Ele se parece com isso:

```

     */
    private int getFailureCount(ChangeNotificationHandle handle) {
        return failureCounts.getOrDefault(handle.getDirectoryPath(), 0);
    }

    /**
     * Increment failure count for a handle
     *
     * @param handle notification handle
     */
    private void incrementFailureCount(ChangeNotificationHandle handle) {

 * the response, the client will issue a conditional `GET`. The server will then send either
 * the updated response if it has changed, or a short 'not modified' response if the client's copy
 * is still valid. Such responses increment both the network count and hit count.
 *
 * The best way to improve the cache hit rate is by configuring the web server to return cacheable