fix: rewrite and improve caching (#3594)

bridges/RedditBridge.php

@@ -72,8 +72,30 @@ class RedditBridge extends BridgeAbstract
             ]
         ]
     ];
+    private CacheInterface $cache;
+
+    public function __construct()
+    {
+        $this->cache = RssBridge::getCache();
+    }
 
     public function collectData()
+    {
+        $cacheKey = 'reddit_rate_limit';
+        if ($this->cache->get($cacheKey)) {
+            throw new HttpException('429 Too Many Requests', 429);
+        }
+        try {
+            $this->collectDataInternal();
+        } catch (HttpException $e) {
+            if ($e->getCode() === 429) {
+                $this->cache->set($cacheKey, true, 60 * 16);
+                throw $e;
+            }
+        }
+    }
+
+    private function collectDataInternal(): void
     {
         $user = false;
         $comments = false;