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-rw-r--r--railties/lib/rails/generators/rails/app/templates/config/puma.rb8
1 files changed, 8 insertions, 0 deletions
diff --git a/railties/lib/rails/generators/rails/app/templates/config/puma.rb b/railties/lib/rails/generators/rails/app/templates/config/puma.rb
index 121ad7080e..a44bfbabec 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/puma.rb
+++ b/railties/lib/rails/generators/rails/app/templates/config/puma.rb
@@ -42,6 +42,14 @@ environment ENV.fetch("RAILS_ENV") { "development" }
# on_worker_boot do
# ActiveRecord::Base.establish_connection if defined?(ActiveRecord)
# end
+#
+# If you are preloading your application and using ActiveRecord, it's
+# recommended that you close any connections to the database before workers
+# are forked to prevent connection leakage.
+#
+# before_fork do
+# ActiveRecord::Base.connection_pool.disconnect! if defined?(ActiveRecord)
+# end
# Allow puma to be restarted by `rails restart` command.
plugin :tmp_restart