Simple cache implementation for image hashes

Model/Gallery/Image.php

@@ -3,6 +3,7 @@
 
 namespace Elevinskii\MediaStorage\Model\Gallery;
 
+use Elevinskii\MediaStorage\Model\Gallery\Image\HashCache;
 use Elevinskii\MediaStorage\Model\Gallery\Image\PathInfo;
 use Elevinskii\MediaStorage\Model\Gallery\Image\PathInfoFactory;
 use Magento\Catalog\Model\Product\Media\ConfigInterface as MediaConfig;
@@ -28,13 +29,15 @@ class Image implements ImageInterface
      * @param PathInfoFactory $pathInfoFactory
      * @param DirectoryList $directoryList
      * @param MediaConfig $mediaConfig
+     * @param HashCache $hashCache
      * @param string $catalogPath
      */
     public function __construct(
         private readonly DirectoryReaderFactory $directoryReaderFactory,
         private readonly PathInfoFactory $pathInfoFactory,
         private readonly DirectoryList $directoryList,
         private readonly MediaConfig $mediaConfig,
+        private readonly HashCache $hashCache,
         private readonly string $catalogPath
     ) {
     }
@@ -72,9 +75,14 @@ public function getPathInfo(): PathInfo
     public function getHash(): string
     {
         $absolutePath = $this->getAbsolutePath();
-        $hash = @hash_file(self::HASH_ALGORITHM, $absolutePath);
 
-        if ($hash === false) {
+        $hash = $this->hashCache->get($absolutePath);
+        if (!$hash) {
+            $hash = @hash_file(self::HASH_ALGORITHM, $absolutePath) ?: null;
+            $this->hashCache->set($absolutePath, $hash);
+        }
+
+        if (!$hash) {
             throw new FileSystemException(
                 __('Cannot calculate hash for the image by path %1', [$absolutePath])
             );

Model/Gallery/Image/HashCache.php

@@ -0,0 +1,35 @@
+<?php
+declare(strict_types=1);
+
+namespace Elevinskii\MediaStorage\Model\Gallery\Image;
+
+class HashCache
+{
+    /**
+     * @var array
+     */
+    private array $cache = [];
+
+    /**
+     * Retrieve file hash by path
+     *
+     * @param string $path
+     * @return string|null
+     */
+    public function get(string $path): ?string
+    {
+        return $this->cache[$path] ?? null;
+    }
+
+    /**
+     * Set file hash by path
+     *
+     * @return $this
+     */
+    public function set(string $path, ?string $hash): self
+    {
+        $this->cache[$path] = $hash;
+
+        return $this;
+    }
+}