}

    /**
     * Creates a security descriptor by decoding from a byte buffer.
     *
     * @param buffer the byte buffer containing the security descriptor data
     * @param bufferIndex the starting offset in the buffer
     * @param len the length of data to decode
     * @throws IOException if an I/O error occurs during decoding
     */

///

## Previous Steps Before Starting { #previous-steps-before-starting }

There are many cases where you want to perform some steps **before starting** your application.

For example, you might want to run **database migrations**.

But in most cases, you will want to perform these steps only **once**.

These examples run the server program (e.g Uvicorn), starting **a single process**, listening on all the IPs (`0.0.0.0`) on a predefined port (e.g. `80`).

This is the basic idea. But you will probably want to take care of some additional things, like:

* Security - HTTPS
* Running on startup
* Restarts
* Replication (the number of processes running)
* Memory
* Previous steps before starting

        }

        return needsRotation;
    }

    /**
     * Reset key rotation tracking after new keys are established
     */
    public void resetKeyRotationTracking() {
        bytesEncrypted.set(0);
        encryptionStartTime = System.currentTimeMillis();
        log.debug("Key rotation tracking reset");
    }

    /**
     * Rotate encryption keys for enhanced security
     *

        forEach(rootDir, null, handler);
    }

    /**
     * Traverses resources contained in the file system.
     * <p>

    // Proactive health monitoring
    private volatile boolean proactiveHealthCheckEnabled = true;
    private final long proactiveCheckInterval = DEFAULT_PROACTIVE_CHECK_INTERVAL;

    // Connection failure tracking
    private final Map<String, Long> lastFailureTimes = new ConcurrentHashMap<>();
    private final Map<String, AtomicInteger> consecutiveFailures = new ConcurrentHashMap<>();

 * #delegate()} method must be overridden to return the instance being decorated.
 *
 * <p>This class does <i>not</i> forward the {@code hashCode} and {@code equals} methods through to
 * the backing object, but relies on {@code Object}'s implementation. This is necessary to preserve
 * the symmetry of {@code equals}. Custom definitions of equality are usually based on an interface,

    }

    /**
     * Creates a security descriptor by decoding from a byte buffer.
     *
     * @param buffer the byte buffer containing the security descriptor data
     * @param bufferIndex the starting offset in the buffer
     * @param len the length of data to decode
     * @throws IOException if an I/O error occurs during decoding
     */

     */
    public SMB1SigningDigest(final byte[] macSigningKey) {
        this.digest = Crypto.getMD5();
        this.macSigningKey = macSigningKey;
    }

    /**
     * Construct a digest with a non-zero starting sequence number
     *
     * @param macSigningKey
     *            The MAC signing key used for generating signatures
     * @param initialSequence
     *            The initial sequence number for signing

Let's check back those deployment concepts from before:

* Security - HTTPS
* Running on startup
* Restarts
* **Replication (the number of processes running)**
* Memory
* Previous steps before starting

Up to this point, with all the tutorials in the docs, you have probably been running a **server program**, for example, using the `fastapi` command, that runs Uvicorn, running a **single process**.