I've deployed Limesurvey in AWS, relying on a Aurora Serverless Instance / MySQL. It works fine, excepting the database instance is constantly polled by the server, making the serverless approach unusable and very costly. In other words, the database instance must stop if the limesurvey front-instances are not accessed.
I think LimeSurvey is using permanent connection, as proposed by the PDO MySQL. Is it possible to use regular one, please? If yes, how can I do it?