This can be very useful for setting up **resources** that you need to use for the whole app, and that are **shared** among requests, and/or that you need to **clean up** afterwards. For example, a database connection pool, or loading a shared machine learning model.

## Use Case { #use-case }

Let's start with an example **use case** and then see how to solve it with this.

```plaintext
/home/user/code/awesome-project/.venv/bin:/usr/bin:/bin:/usr/sbin:/sbin
```

That means that the system will now start looking first for programs in:

```plaintext
/home/user/code/awesome-project/.venv/bin
```

before looking in the other directories.

So, when you type `python` in the terminal, the system will find the Python program in

```plaintext

import java.util.Map;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.CoreLibConstants;
import org.codelibs.core.exception.InterruptedRuntimeException;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.lang.ThreadUtil;

### Saved graphs and checkpoints

When loading untrusted serialized computation graphs (in form of a `GraphDef`,
`SavedModel`, or equivalent on-disk format), the set of computation primitives
available to TensorFlow is powerful enough that you should assume that the
TensorFlow process effectively executes arbitrary code.

The risk of loading untrusted checkpoints depends on the code or graph that you

@REM
@REM   JAVA_HOME           (Optional) Points to a Java installation.
@REM   MAVEN_OPTS          (Optional) Java runtime options used when Maven is executed.
@REM   MAVEN_SKIP_RC       (Optional) Flag to disable loading of mavenrc files.
@REM -----------------------------------------------------------------------------

@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
@echo off
@REM set title of command window
title %0

import java.util.function.Consumer;
import java.util.stream.Collectors;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.exception.IORuntimeException;
import org.codelibs.core.exception.InterruptedRuntimeException;
import org.codelibs.core.lang.StringUtil;

import jcifs.Encodable;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Lock data structure.
 *
 * This class represents a single lock element used in
 * SMB2 Lock requests for byte-range locking.
 *
 * @author mbechler
 */
public class Smb2Lock implements Encodable {

    /**
     * Flag indicating a shared lock that allows concurrent read access.
     */

import java.lang.ref.ReferenceQueue;
import java.lang.ref.WeakReference;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.jspecify.annotations.Nullable;

/**
 * Thread that finalizes referents. All references should implement {@code
 * com.google.common.base.FinalizableReference}.
 *

 * under the License.
 */

/**
 * Provides early-stage logging capabilities for Maven CLI operations.
 * These logging facilities are used during Maven startup before the full logging
 * system is initialized.
 *
 * <p>This package includes:</p>
 * <ul>
 *   <li>Basic logging interfaces and implementations</li>
 *   <li>Support for different logging levels (DEBUG, INFO, WARN, ERROR)</li>

			return r, err
		}
		return r, err
	}
	return config.ToRetention(), nil
}

// enforceRetentionForDeletion checks if it is appropriate to remove an
// object according to locking configuration when this is lifecycle/ bucket quota asking.
func enforceRetentionForDeletion(ctx context.Context, objInfo ObjectInfo) (locked bool) {
	if objInfo.DeleteMarker {
		return false
	}