diff --git a/lib/hijacker.rb b/lib/hijacker.rb
index 16161da..4e92857 100644
--- a/lib/hijacker.rb
+++ b/lib/hijacker.rb
@@ -81,7 +81,7 @@ def self.connect(target_name, sister_name = nil, options = {})
 
       #reenable_query_caching
 
-      reset_column_info_for_active_record
+      reset_column_info_for_active_record(target_name)
 
       run_after_hijack_callback
 
@@ -299,8 +299,14 @@ def self.run_after_hijack_callback
   # Reset column information to ensure models are up-to-date with the new schema.
   # This ensures that any changes to the database schema are immediately
   # in a multi-tenant architecture where different tenants might have
-  def self.reset_column_info_for_active_record
-    ::ActiveRecord::Base.descendants.each do |klass|
+  def self.reset_column_info_for_active_record(target_name)
+    descendants_key = "#{target_name}/hijacker_descendants"
+    descendants = $redis.get(descendants_key)
+    if descendants.blank?
+      descendants = ::ActiveRecord::Base.descendants
+      $redis.setex(descendants_key, 12.hours,descendants)
+    end
+    descendants.each do |klass|
       klass.reset_column_information
     end
   end