From 303fb6e6e345a04d88f76f909ee3726786d663a9 Mon Sep 17 00:00:00 2001
From: Saiqul Haq <saiqulhaq@gmail.com>
Date: Wed, 3 Jul 2024 23:45:06 +0700
Subject: [PATCH] fix: use Concurrent::Map instead of Ruby `||=` to make thread
 safe

---
 lib/active_model/serializer/lazy_association.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/active_model/serializer/lazy_association.rb b/lib/active_model/serializer/lazy_association.rb
index ed7bd65c2..4ae164036 100644
--- a/lib/active_model/serializer/lazy_association.rb
+++ b/lib/active_model/serializer/lazy_association.rb
@@ -53,7 +53,7 @@ def serializer_class
       private
 
       def cached_result
-        @cached_result ||= {}
+        @cached_result ||= Concurrent::Map.new
       end
 
       def serialize_object!(object)