From a75009a65e1335047dff5488b4e67bdc03677590 Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Sun, 8 Sep 2019 19:17:57 +0200
Subject: [PATCH] Change half-life of trend decay (#11774)

---
 app/models/trending_tags.rb | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/app/models/trending_tags.rb b/app/models/trending_tags.rb
index e1b92b175..8cdade42d 100644
--- a/app/models/trending_tags.rb
+++ b/app/models/trending_tags.rb
@@ -7,8 +7,8 @@ class TrendingTags
   THRESHOLD            = 5
   LIMIT                = 10
   REVIEW_THRESHOLD     = 3
-  MAX_SCORE_COOLDOWN   = 3.days.freeze
-  MAX_SCORE_HALFLIFE   = 6.hours.freeze
+  MAX_SCORE_COOLDOWN   = 2.days.freeze
+  MAX_SCORE_HALFLIFE   = 2.hours.freeze
 
   class << self
     include Redisable
@@ -83,6 +83,7 @@ class TrendingTags
       # Trim older items
 
       redis.zremrangebyrank(KEY, 0, -(LIMIT + 1))
+      redis.zremrangebyscore(KEY, '(0.3', '-inf')
     end
 
     def get(limit, filtered: true)