Add misfire grace and exit scheduler

app/__init__.py

@@ -18,7 +18,11 @@ engine = create_engine(os.environ["DATABASE_URI"], client_encoding='utf8')
 Session = sessionmaker(bind=engine)
 
 # scheduler
-scheduler = BackgroundScheduler()
+scheduler = BackgroundScheduler(
+    daemon=True,
+    job_defaults={'misfire_grace_time': 5*60},
+)
+
 scheduler.start()
 
 # logging

app/__main__.py

@@ -48,4 +48,5 @@ if __name__ == '__main__':
             time.sleep(100)
     except KeyboardInterrupt:
         LOGGER.info('Exiting application')
+        scheduler.shutdown()
         exit()