Fixes #3526 - Default session timeout verification on backend only once a hour.

db/migrate/20210426000000_scheduler_session_timeout.rb

@@ -0,0 +1,8 @@
+class SchedulerSessionTimeout < ActiveRecord::Migration[5.2]
+  def change
+
+    return if !Setting.exists?(name: 'system_init_done')
+
+    Scheduler.find_by(name: 'Cleanup dead sessions.').update(period: 1.hour)
+  end
+end

db/seeds/schedulers.rb

@@ -139,7 +139,7 @@ Scheduler.create_or_update(
 Scheduler.create_or_update(
   name:          'Cleanup dead sessions.',
   method:        'SessionTimeoutJob.perform_now',
-  period:        1.minute,
+  period:        1.hour,
   prio:          2,
   active:        true,
   updated_by_id: 1,