(feat): implement caching layer for homepage content

Controllers/api/v2/feeds/channel.php

@@ -116,6 +116,11 @@ class channel implements Interfaces\Api
 
  $custom_type = isset($_GET['custom_type']) && $_GET['custom_type'] ? [$_GET['custom_type']] : null;
 
+ $cache = (bool) $_GET['cache'] ?? false;
+
+ /** @var Core\Data\cache\abstractCacher $cacher */
+ $cacher = Di::_()->get('Cache');
+
  /** @var Core\Feeds\Top\Entities $entities */
  $entities = new Core\Feeds\Top\Entities();
  $entities->setActor($currentUser);
@@ -164,6 +169,15 @@ class channel implements Interfaces\Api
  $opts['filter_hashtags'] = true;
  }
 
+ $cacheKey = $this->getCacheKey($opts);
+
+ if ($cache) {
+ $cached = $cacher->get($cacheKey);
+ if ($cached && count($cached) > 0) {
+ return Factory::response($cached);
+ }
+ }
+
  try {
  $result = $this->getData($entities, $opts, $asActivities, $sync);
 
@@ -172,17 +186,28 @@ class channel implements Interfaces\Api
  $result = $this->getData($entities, $opts, $asActivities, $sync);
  }
 
- return Factory::response([
+ $response = [
  'status' => 'success',
  'entities' => Exportable::_($result),
  'load-next' => $result->getPagingToken(),
- ]);
+ ];
+
+ if ($cache) {
+ $cacher->set($cacheKey, $response, 300); // cache for 5 mins
+ }
+
+ return Factory::response($response);
  } catch (\Exception $e) {
  error_log($e);
  return Factory::response(['status' => 'error', 'message' => $e->getMessage()]);
  }
  }
 
+ private function getCacheKey(array $opts): string
+ {
+ return "feeds-channel:" . implode(':', opts);
+ }
+
  /**
  * @param Core\Feeds\Top\Entities $entities
  * @param array $opts