diff --git a/benchmarks/DataManagementBench.php b/benchmarks/DataManagementBench.php
new file mode 100644
index 0000000..b138966
--- /dev/null
+++ b/benchmarks/DataManagementBench.php
@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Infocyph\Pathwise\Benchmarks;
+
+use Infocyph\Pathwise\Indexing\ChecksumIndexer;
+use Infocyph\Pathwise\Retention\RetentionManager;
+use Infocyph\Pathwise\Utils\FlysystemHelper;
+use Infocyph\Pathwise\Utils\PathHelper;
+use PhpBench\Attributes as Bench;
+
+#[Bench\Iterations(5)]
+#[Bench\Revs(50)]
+#[Bench\BeforeMethods(['setUp'])]
+#[Bench\AfterMethods(['tearDown'])]
+final class DataManagementBench
+{
+    private string $baseDir;
+
+    public function setUp(): void
+    {
+        $this->baseDir = PathHelper::normalize(sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'pathwise_data_ops_bench_' . uniqid('', true));
+        FlysystemHelper::createDirectory($this->baseDir);
+
+        // Build a deterministic mixed set with duplicates.
+        for ($i = 0; $i < 8; $i++) {
+            $content = $i < 4 ? 'duplicate-content' : 'unique-content-' . $i;
+            FlysystemHelper::write(
+                PathHelper::join($this->baseDir, sprintf('artifact_%02d.txt', $i)),
+                $content,
+            );
+        }
+    }
+
+    public function tearDown(): void
+    {
+        if (FlysystemHelper::directoryExists($this->baseDir)) {
+            FlysystemHelper::deleteDirectory($this->baseDir);
+        }
+    }
+
+    public function benchApplyRetentionScanOnly(): void
+    {
+        RetentionManager::apply($this->baseDir, null, null, 'mtime');
+    }
+
+    public function benchBuildChecksumIndex(): void
+    {
+        ChecksumIndexer::buildIndex($this->baseDir, 'sha256');
+    }
+
+    public function benchFindDuplicates(): void
+    {
+        ChecksumIndexer::findDuplicates($this->baseDir, 'sha256');
+    }
+}
diff --git a/benchmarks/FileAndDirectoryBench.php b/benchmarks/FileAndDirectoryBench.php
new file mode 100644
index 0000000..992611f
--- /dev/null
+++ b/benchmarks/FileAndDirectoryBench.php
@@ -0,0 +1,84 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Infocyph\Pathwise\Benchmarks;
+
+use Infocyph\Pathwise\DirectoryManager\DirectoryOperations;
+use Infocyph\Pathwise\FileManager\FileOperations;
+use Infocyph\Pathwise\Utils\FlysystemHelper;
+use Infocyph\Pathwise\Utils\PathHelper;
+use PhpBench\Attributes as Bench;
+
+#[Bench\Iterations(5)]
+#[Bench\Revs(120)]
+#[Bench\BeforeMethods(['setUp'])]
+#[Bench\AfterMethods(['tearDown'])]
+final class FileAndDirectoryBench
+{
+    private string $baseDir;
+
+    private string $expectedChecksum;
+
+    private string $filePath;
+
+    public function setUp(): void
+    {
+        $this->baseDir = PathHelper::normalize(sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'pathwise_file_dir_bench_' . uniqid('', true));
+        FlysystemHelper::createDirectory($this->baseDir);
+
+        $logsDir = PathHelper::join($this->baseDir, 'logs');
+        $exportsDir = PathHelper::join($this->baseDir, 'exports');
+        FlysystemHelper::createDirectory($logsDir);
+        FlysystemHelper::createDirectory($exportsDir);
+
+        for ($i = 0; $i < 6; $i++) {
+            FlysystemHelper::write(
+                PathHelper::join($logsDir, sprintf('entry_%02d.log', $i)),
+                'benchmark-log-' . $i,
+            );
+        }
+
+        for ($i = 0; $i < 6; $i++) {
+            FlysystemHelper::write(
+                PathHelper::join($exportsDir, sprintf('report_%02d.txt', $i)),
+                str_repeat('report-line-' . $i . PHP_EOL, 10),
+            );
+        }
+
+        $this->filePath = PathHelper::join($this->baseDir, 'exports', 'report_00.txt');
+        $this->expectedChecksum = hash('sha256', (string) FlysystemHelper::read($this->filePath));
+    }
+
+    public function tearDown(): void
+    {
+        if (FlysystemHelper::directoryExists($this->baseDir)) {
+            FlysystemHelper::deleteDirectory($this->baseDir);
+        }
+    }
+
+    public function benchDirectoryFindTxtFiles(): void
+    {
+        $directory = new DirectoryOperations($this->baseDir);
+        $directory->find(['extension' => 'txt']);
+    }
+
+    public function benchDirectoryListContentsDetailed(): void
+    {
+        $directory = new DirectoryOperations($this->baseDir);
+        $directory->listContents(true);
+    }
+
+    public function benchDirectorySize(): void
+    {
+        $directory = new DirectoryOperations($this->baseDir);
+        $directory->size();
+    }
+
+    public function benchFileReadAndVerifyChecksum(): void
+    {
+        $file = new FileOperations($this->filePath);
+        $file->read();
+        $file->verifyChecksum($this->expectedChecksum, 'sha256');
+    }
+}
diff --git a/benchmarks/FlysystemHelperBench.php b/benchmarks/FlysystemHelperBench.php
new file mode 100644
index 0000000..5ec425a
--- /dev/null
+++ b/benchmarks/FlysystemHelperBench.php
@@ -0,0 +1,52 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Infocyph\Pathwise\Benchmarks;
+
+use Infocyph\Pathwise\Utils\FlysystemHelper;
+use Infocyph\Pathwise\Utils\PathHelper;
+use PhpBench\Attributes as Bench;
+
+#[Bench\Iterations(5)]
+#[Bench\Revs(80)]
+#[Bench\BeforeMethods(['setUp'])]
+#[Bench\AfterMethods(['tearDown'])]
+final class FlysystemHelperBench
+{
+    private string $baseDir;
+
+    private string $filePath;
+
+    public function setUp(): void
+    {
+        $this->baseDir = PathHelper::normalize(sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'pathwise_bench_' . uniqid('', true));
+        FlysystemHelper::createDirectory($this->baseDir);
+
+        $this->filePath = PathHelper::join($this->baseDir, 'payload.txt');
+        FlysystemHelper::write($this->filePath, str_repeat('Pathwise benchmark payload' . PHP_EOL, 128));
+    }
+
+    public function tearDown(): void
+    {
+        if (FlysystemHelper::directoryExists($this->baseDir)) {
+            FlysystemHelper::deleteDirectory($this->baseDir);
+        }
+    }
+
+    public function benchChecksumSha256(): void
+    {
+        FlysystemHelper::checksum($this->filePath, 'sha256');
+    }
+
+    public function benchGetMetadataSizeAndMtime(): void
+    {
+        FlysystemHelper::size($this->filePath);
+        FlysystemHelper::lastModified($this->filePath);
+    }
+
+    public function benchReadFileContents(): void
+    {
+        FlysystemHelper::read($this->filePath);
+    }
+}
diff --git a/benchmarks/PathHelperBench.php b/benchmarks/PathHelperBench.php
new file mode 100644
index 0000000..21c8777
--- /dev/null
+++ b/benchmarks/PathHelperBench.php
@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Infocyph\Pathwise\Benchmarks;
+
+use Infocyph\Pathwise\Utils\PathHelper;
+use PhpBench\Attributes as Bench;
+
+#[Bench\Iterations(6)]
+#[Bench\Revs(1500)]
+final class PathHelperBench
+{
+    public function benchJoinMultipleSegments(): void
+    {
+        PathHelper::join(
+            '/var',
+            'www',
+            'project',
+            'storage',
+            'uploads',
+            '../uploads',
+            '2026',
+            '05',
+            '13',
+            'artifact.zip',
+        );
+    }
+
+    public function benchNormalizeDeepRelativePath(): void
+    {
+        PathHelper::normalize('/var/www/project/src/../tests/./fixtures/../../src/Utils/PathHelper.php');
+    }
+
+    public function benchRelativePathComputation(): void
+    {
+        PathHelper::relativePath(
+            '/var/www/project/modules/pathwise/src',
+            '/var/www/project/modules/pathwise/tests/Feature/UploadProcessorTest.php',
+        );
+    }
+}
diff --git a/benchmarks/StreamHandlerBench.php b/benchmarks/StreamHandlerBench.php
new file mode 100644
index 0000000..246953c
--- /dev/null
+++ b/benchmarks/StreamHandlerBench.php
@@ -0,0 +1,98 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Infocyph\Pathwise\Benchmarks;
+
+use Infocyph\Pathwise\StreamHandler\DownloadProcessor;
+use Infocyph\Pathwise\StreamHandler\UploadProcessor;
+use Infocyph\Pathwise\Utils\FlysystemHelper;
+use Infocyph\Pathwise\Utils\PathHelper;
+use PhpBench\Attributes as Bench;
+
+#[Bench\Iterations(4)]
+#[Bench\Revs(40)]
+#[Bench\BeforeMethods(['setUp'])]
+#[Bench\AfterMethods(['tearDown'])]
+final class StreamHandlerBench
+{
+    private string $baseDir;
+
+    private string $downloadFilePath;
+
+    private DownloadProcessor $downloadProcessor;
+
+    private string $uploadDir;
+
+    private UploadProcessor $uploadProcessor;
+
+    public function setUp(): void
+    {
+        $this->baseDir = PathHelper::normalize(sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'pathwise_stream_bench_' . uniqid('', true));
+        $this->uploadDir = PathHelper::join($this->baseDir, 'uploads');
+        $downloadsDir = PathHelper::join($this->baseDir, 'downloads');
+
+        FlysystemHelper::createDirectory($this->uploadDir);
+        FlysystemHelper::createDirectory($downloadsDir);
+
+        $this->downloadFilePath = PathHelper::join($downloadsDir, 'dataset.txt');
+        FlysystemHelper::write($this->downloadFilePath, str_repeat('download-content' . PHP_EOL, 64));
+
+        $this->uploadProcessor = new UploadProcessor();
+        $this->uploadProcessor->setDirectorySettings($this->uploadDir, false);
+        $this->uploadProcessor->setValidationSettings([], 2 * 1024 * 1024);
+
+        $this->downloadProcessor = new DownloadProcessor();
+        $this->downloadProcessor->setAllowedRoots([$this->baseDir]);
+    }
+
+    public function tearDown(): void
+    {
+        if (FlysystemHelper::directoryExists($this->baseDir)) {
+            FlysystemHelper::deleteDirectory($this->baseDir);
+        }
+    }
+
+    public function benchPrepareDownloadMetadata(): void
+    {
+        $this->downloadProcessor->prepareDownload($this->downloadFilePath, 'dataset.txt', null);
+    }
+
+    public function benchProcessUpload(): void
+    {
+        $tmpUpload = tempnam(sys_get_temp_dir(), 'pathwise_upload_bench_');
+        if (!is_string($tmpUpload)) {
+            return;
+        }
+
+        file_put_contents($tmpUpload, str_repeat('upload-payload', 128));
+
+        try {
+            $destination = $this->uploadProcessor->processUpload([
+                'error' => UPLOAD_ERR_OK,
+                'size' => filesize($tmpUpload) ?: 0,
+                'tmp_name' => $tmpUpload,
+                'name' => 'payload.txt',
+            ]);
+            FlysystemHelper::delete($destination);
+        } finally {
+            if (is_file($tmpUpload)) {
+                unlink($tmpUpload);
+            }
+        }
+    }
+
+    public function benchStreamDownload(): void
+    {
+        $output = fopen('php://temp', 'w+b');
+        if (!is_resource($output)) {
+            return;
+        }
+
+        try {
+            $this->downloadProcessor->streamDownload($this->downloadFilePath, $output);
+        } finally {
+            fclose($output);
+        }
+    }
+}