diff --git a/services/nginx/app/objects/accounts_o.php b/services/nginx/app/objects/accounts_o.php
index 8d8e482b..9771a074 100644
--- a/services/nginx/app/objects/accounts_o.php
+++ b/services/nginx/app/objects/accounts_o.php
@@ -100,27 +100,44 @@ class accounts_o extends db
         $this->deleted_at = new object_property($this->table, $this->id, 'deleted_at', 'datetime', false);
     }
 
+    /**
+     * Invalidate the cached object when it is changed
+     * @throws Exception If no object is selected
+     */
     public function objectChanged(): void
     {
-        //TODO: Add cache invalidation
+        self::requireSelected();
+        // Invalidate the cache
+        self::deleteCached(self::$asArrayCacheKey);
     }
 
     /**
      * Get the object as an array
      * @return array The object as an array
+     * @throws Exception If no object is selected
      */
     public function asArray(): array
     {
-        return [
-            'id' => $this->id,
-            'phone' => $this->phone->value(),
-            'country_code' => $this->country_code->value(),
-            'name' => $this->name->value(),
-            'profile_picture' => $this->profile_picture->value(),
+        self::requireSelected();
+        $cached = self::getCached(self::$asArrayCacheKey);
+        // If the object is cached, return it
+        if (!empty($cached)) return $cached;
+        // Convert the object to an array
+        $array = [
+            'id' => (int)$this->id,
+            'phone' => (int)$this->phone->value(),
+            'country_code' => (int)$this->country_code->value(),
+            'name' => (string)$this->name->value(),
+            'profile_picture' => (int)$this->profile_picture->value(),
             'seen_at' => $this->seen_at->value(),
             'created_at' => $this->created_at->value(),
             'updated_at' => $this->updated_at->value(),
             //'deleted_at' => $this->deleted_at->value(),
         ];
+        // Cache the object
+        self::cache(self::$asArrayCacheKey, $array);
+        self::setCachedExpiration(self::$asArrayCacheKey, self::$asArrayCacheExpiration);
+        // Return the object as an array
+        return $array;
     }
 }
\ No newline at end of file