From 6ee306bf33a152b49a8103e142a942c9f0b23519 Mon Sep 17 00:00:00 2001
From: Bastien Jaillot <bjaillot@jolicode.com>
Date: Thu, 19 Dec 2019 14:29:37 +0100
Subject: [PATCH] [Cache] add array cache in front of serializer cache

---
 .../Mapping/Factory/CacheClassMetadataFactory.php     | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/Serializer/Mapping/Factory/CacheClassMetadataFactory.php b/src/Symfony/Component/Serializer/Mapping/Factory/CacheClassMetadataFactory.php
index 0b904c14400d..4737dcabd168 100644
--- a/src/Symfony/Component/Serializer/Mapping/Factory/CacheClassMetadataFactory.php
+++ b/src/Symfony/Component/Serializer/Mapping/Factory/CacheClassMetadataFactory.php
@@ -32,6 +32,8 @@ class CacheClassMetadataFactory implements ClassMetadataFactoryInterface
      */
     private $cacheItemPool;
 
+    private $loadedClasses = [];
+
     public function __construct(ClassMetadataFactoryInterface $decorated, CacheItemPoolInterface $cacheItemPool)
     {
         $this->decorated = $decorated;
@@ -44,18 +46,23 @@ public function __construct(ClassMetadataFactoryInterface $decorated, CacheItemP
     public function getMetadataFor($value)
     {
         $class = $this->getClass($value);
+
+        if (isset($this->loadedClasses[$class])) {
+            return $this->loadedClasses[$class];
+        }
+
         // Key cannot contain backslashes according to PSR-6
         $key = strtr($class, '\\', '_');
 
         $item = $this->cacheItemPool->getItem($key);
         if ($item->isHit()) {
-            return $item->get();
+            return $this->loadedClasses[$class] = $item->get();
         }
 
         $metadata = $this->decorated->getMetadataFor($value);
         $this->cacheItemPool->save($item->set($metadata));
 
-        return $metadata;
+        return $this->loadedClasses[$class] = $metadata;
     }
 
     /**