Close any database connections at the end of request

lib/ruby_lsp/ruby_lsp_rails/server.rb

@@ -294,6 +294,7 @@ def start
 
           request = JSON.parse(json, symbolize_names: true)
           execute(request.fetch(:method), request[:params])
+          disconnect_from_database
         end
       end
 
@@ -493,6 +494,18 @@ def clear_file_system_resolver_hooks
         end
       end
 
+      # Keeping a connection to the database prevents it from being dropped in development. We don't actually need to
+      # to reuse database connections for the LSP server, the performance benefit of doing so only matters in production
+      # where there is latency, locally we're fine with the small overhead of establishing a new connection on each request.
+      #: -> void
+      def disconnect_from_database
+        return unless defined?(::ActiveRecord::Base)
+
+        with_notification_error_handling("disconnect_from_database") do
+          ActiveRecord::Base.connection_handler.clear_all_connections!(:all)
+        end
+      end
+
       #: (singleton(ActiveRecord::Base)) -> Array[String]
       def collect_model_foreign_keys(model)
         return [] unless model.connection.respond_to?(:supports_foreign_keys?) &&