disableCacheGets once per key

library/iFixit/Matryoshka/DisableCacheGets.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace iFixit\Matryoshka;
+
+/**
+ * Refresh the cache once per key per request.
+ */
+class DisableCacheGets extends Backend {
+   private Backend $backend;
+   private array $gets;
+
+   public function __construct(Backend $backend) {
+      $this->backend = $backend;
+      $this->gets = [];
+   }
+
+   public function get($key) {
+      if ($this->gets[$key] ?? null) {
+         return $this->backend->get($key);
+      } else {
+         $this->gets[$key] = true;
+         return self::MISS;
+      }
+   }
+
+   public function getMultiple(array $keys) {
+      $found = [];
+      foreach ($keys as $key => $_) {
+         if ($this->gets[$key] ?? null) {
+            $found[$key] = $this->backend->get($key);
+         } else {
+            $this->gets[$key] = true;
+            $found[$key] = self::MISS;
+         }
+      }
+      return [$found, $keys];
+   }
+}