Use APCu instead of file-based cache

Author: pierres

extend.php

@@ -15,6 +15,7 @@
 use App\Console\PurgeSuspendedUsers;
 use App\Middleware\ContentSecurityPolicy;
 use App\Middleware\NoCacheHeader;
+use App\ServiceProvider\ApcuCacheProvider;
 use App\ServiceProvider\ErrorLogProvider;
 use App\ServiceProvider\SessionServiceProvider;
 use Flarum\Extend;
@@ -41,6 +42,7 @@
     (new Extend\Console())
         ->command(PurgeSuspendedUsers::class)
         ->schedule(PurgeSuspendedUsers::class, fn (Event $event) => $event->daily()),
+    (new Extend\ServiceProvider())->register(ApcuCacheProvider::class),
     (new Extend\ServiceProvider())->register(ErrorLogProvider::class),
     (new Extend\ServiceProvider())->register(SessionServiceProvider::class),
     (new Extend\Middleware('forum'))->add(ContentSecurityPolicy::class),

src/ServiceProvider/ApcuCacheProvider.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace App\ServiceProvider;
+
+use Flarum\Foundation\AbstractServiceProvider;
+use Illuminate\Cache\ApcStore;
+use Illuminate\Cache\ApcWrapper;
+use Illuminate\Contracts\Cache\Store;
+
+class ApcuCacheProvider extends AbstractServiceProvider
+{
+    public function register(): void
+    {
+        $this->container->singleton('cache.filestore', fn (): ApcStore => new ApcStore(new ApcWrapper(), 'flarum_'));
+        $this->container->alias('cache.filestore', Store::class);
+    }
+}