From 84f4e88573099a0548636235866be1bdd63918fb Mon Sep 17 00:00:00 2001
From: Daniel Supernault <danielsupernault@gmail.com>
Date: Tue, 14 Nov 2023 23:55:53 -0700
Subject: [PATCH] Update HashtagFollowService, fix cache invalidation bug

---
 app/Services/HashtagFollowService.php | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/app/Services/HashtagFollowService.php b/app/Services/HashtagFollowService.php
index 012c8c00a..d4f93f404 100644
--- a/app/Services/HashtagFollowService.php
+++ b/app/Services/HashtagFollowService.php
@@ -24,12 +24,7 @@ class HashtagFollowService
 
 	public static function unfollow($hid, $pid)
 	{
-		$list = self::getPidByHid($hid);
-		if($list && count($list)) {
-			$list = array_values(array_diff($list, [$pid]));
-			Cache::put(self::FOLLOW_KEY . $hid, $list, 86400);
-		}
-		return;
+		return Redis::zrem(self::CACHE_KEY . $hid, $pid);
 	}
 
 	public static function add($hid, $pid)
@@ -67,7 +62,7 @@ class HashtagFollowService
 
 	public static function isWarm($hid)
 	{
-		return Redis::zcount($hid, 0, -1) ?? Redis::zscore(self::CACHE_WARMED, $hid) != null;
+		return Redis::zcount(self::CACHE_KEY . $hid, 0, -1) ?? Redis::zscore(self::CACHE_WARMED, $hid) != null;
 	}
 
 	public static function setWarm($hid)