From f69f0b97f5d1ee74dd4e5ef625da804d3334f879 Mon Sep 17 00:00:00 2001
From: Omar Roth <omarroth@protonmail.com>
Date: Tue, 24 Sep 2019 13:38:08 -0400
Subject: [PATCH] Add fix for index out of bounds during high load

---
 src/invidious/helpers/handlers.cr | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/invidious/helpers/handlers.cr b/src/invidious/helpers/handlers.cr
index f2240691c..949eb3353 100644
--- a/src/invidious/helpers/handlers.cr
+++ b/src/invidious/helpers/handlers.cr
@@ -237,3 +237,16 @@ class HTTP::Client
     response
   end
 end
+
+struct Crystal::ThreadLocalValue(T)
+  @values = Hash(Thread, T).new
+
+  def get(&block : -> T)
+    th = Thread.current
+    if !@values[th]?
+      @values[th] = yield
+    else
+      @values[th]
+    end
+  end
+end