diff --git a/app/Services/MediaTagService.php b/app/Services/MediaTagService.php
new file mode 100644
index 00000000..087487d4
--- /dev/null
+++ b/app/Services/MediaTagService.php
@@ -0,0 +1,78 @@
+<?php
+
+namespace App\Services;
+
+use Cache;
+use Illuminate\Support\Facades\Redis;
+use App\Notification;
+use App\MediaTag;
+use League\Fractal;
+use League\Fractal\Serializer\ArraySerializer;
+use League\Fractal\Pagination\IlluminatePaginatorAdapter;
+
+class MediaTagService
+{
+	const CACHE_KEY = 'pf:services:media_tags:id:';
+
+	public static function get($mediaId, $usernames = true)
+	{
+		$k = 'pf:services:media_tags:get:sid:' . $mediaId;
+		return Cache::remember($k, now()->addMinutes(60), function() use($mediaId, $usernames) {
+			$key = self::CACHE_KEY . $mediaId;
+			if(Redis::zCount($key, '-inf', '+inf') == 0) {
+				return [];
+			}
+			$res = Redis::zRange($key, 0, -1);
+			if(!$usernames) {
+				return $res;
+			}
+			$usernames = [];
+			foreach ($res as $k) {
+				$username = (new self)->idToUsername($k);
+				array_push($usernames, $username);
+			}
+
+			return $usernames;
+		});
+	}
+
+	public static function set($mediaId, $profileId)
+	{
+		$key = self::CACHE_KEY . $mediaId;
+		Redis::zAdd($key, $profileId, $profileId);
+		return true;
+	}
+
+	protected function idToUsername($id)
+	{
+		$profile = ProfileService::build()->profileId($id);
+
+		if(!$profile) {
+			return 'unavailable';
+		}
+
+		return [
+			'username' => $profile->username,
+			'avatar' => $profile->avatarUrl()
+		];
+	}
+
+	public static function sendNotification(MediaTag $tag)
+	{
+		$p = $tag->status->profile;
+		$actor = $p->username;
+		$message = "{$actor} tagged you in a post.";
+		$rendered = "<a href='/{$actor}' class='profile-link'>{$actor}</a> tagged you in a post.";
+		$n = new Notification;
+		$n->profile_id = $tag->profile_id;
+		$n->actor_id = $p->id;
+		$n->item_id = $tag->id;
+		$n->item_type = 'App\MediaTag';
+		$n->action = 'tagged';
+		$n->message = $message;
+		$n->rendered = $rendered;
+		$n->save();
+		return;
+	}
+
+}
\ No newline at end of file