Custom Scheduler Name

To customize the way how the default SchedulerService is build the SchedulerCustomizer interface can be used.

Use random string

One possible way could be just to use a random string for each instance, which will change on each restart.

@Bean
  SchedulerCustomizer schedulerCustomizer(Environment env) {
    return new SchedulerCustomizer() {
      public String name() {
        var hostname = UUID.randomUUID().toString().substring(0, 8);
        hostname = String.join("-", env.getActiveProfiles()) + "-" + hostname;
        return hostname;
      }
    };

Azure example

In this example we use the azure web-application environment variables to set the scheduler name:

@Bean
SchedulerCustomizer schedulerCustomizer(Environment env) {
  return new SchedulerCustomizer() {
    public String name() {
      var hostname = env.getProperty("WEBSITE_INSTANCE_ID");
      var role = env.getProperty("APPSETTING_APPLICATIONINSIGHTS_ROLE_NAME", "").toLowerCase();
      if (role != "") {
        hostname = hostname + "-" + role;
      }
      return hostname;
    }
  };
}