title: Full Spring integration with Quartz to implement real time notification e-mails
body: <p>I'm currently developing an application with spring boot that let users to create an appointment. So basically the appointment has a startDateTime and an endDateTime fields + an e-mail. The creation of an appointment adds a new line in the appointment table of a MySql database.</p>
  
  <p>What I want to do is to notify the user one hour before the startDateTime defined in the database with an e-mail. I looked for a solution but couldn't find one. I found that jobs (spring batch) can do this, but jobs rely on a frequency check (days, weeks, months) what I'm looking for is a real-time notification. Any help or guidance for a solution to realise such task is welcomed.</p>
  
  <p>Greetings</p>