Added the PruneCacheMiddleware

app/config/cache.php

@@ -21,6 +21,15 @@ return [
      */
     'cache_lifetime' => DI\env('CACHE_LIFETIME', 0),
 
+    /**
+     * Some cache drivers require manually pruning the cache periodically to
+     * remove expired items. This is the percentage chance (out of 100) of a
+     * request "winning" the lottery causing the cache to be pruned.
+     *
+     * Default value: 2
+     */
+    'cache_lottery' => DI\env('CACHE_LOTTERY', 2),
+
     /**
      * Path to the view cache directory. Set to 'false' to disable
      * view caching entirely. The view cache is separate from the application

app/src/Middlewares/PruneCacheMiddleware.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace App\Middlewares;
+
+use App\Config;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface as Request;
+use Psr\Http\Server\RequestHandlerInterface as RequestHandler;
+use Symfony\Component\Cache\PruneableInterface;
+use Symfony\Contracts\Cache\CacheInterface;
+
+class PruneCacheMiddleware
+{
+    /** @var Config The application configuration */
+    protected $config;
+
+    /** @var CacheInterface The application cache */
+    protected $cache;
+
+    /** Create a new CachePruneMiddleware object. */
+    public function __construct(Config $config, CacheInterface $cache)
+    {
+        $this->config = $config;
+        $this->cache = $cache;
+    }
+
+    /** Invoke the CachePruneMiddleware class. */
+    public function __invoke(Request $request, RequestHandler $handler): ResponseInterface
+    {
+        $response = $handler->handle($request);
+
+        if (! $this->cache instanceof PruneableInterface) {
+            return $response;
+        }
+
+        if ($this->winsLottery()) {
+            $this->cache->prune();
+        }
+
+        return $response;
+    }
+
+    /** Determine if this request wins the lottery. */
+    private function winsLottery(): bool
+    {
+        return random_int(1, 100) <= $this->config->get('cache_lottery');
+    }
+}