Notifications and listeners in PostgreSQL - is it worth starting to use them?

The article discusses the Listen/Notify functionality in PostgreSQL, which enables automatic notification of clients about events in the database. This functionality utilizes a channel mechanism, allowing multiple clients to easily communicate within the PostgreSQL system. Firstly, the Listen function allows clients to subscribe to specific channels. When an event occurs, and therefore data is sent, all subscribing client instances are notified through the Notify mechanism. Importantly, this approach significantly reduces the load by conveniently and efficiently informing users about important changes without the need to constantly check the state of each entry or event in the database. The article also explains how to implement this mechanism in practice using various programming languages, which is extremely helpful for developers working in database environments. Finally, the author emphasizes the importance of this functionality in projects that require quick response to changes, thus enhancing the efficiency of applications operating on PostgreSQL databases.