__init__.py

#!/usr/bin/env python
# -*- coding: utf_8 -*-

from app import config
from apscheduler.schedulers.background import BackgroundScheduler
# from apscheduler.jobstores.mongodb import MongoDBJobStore
from apscheduler.jobstores.sqlalchemy import SQLAlchemyJobStore
from apscheduler.executors.pool import ThreadPoolExecutor, ProcessPoolExecutor

jobstores = {
    # 'mongo': MongoDBJobStore(),
    'default': SQLAlchemyJobStore(url='sqlite:///{}'.format("scheduler.db", engine_options={ 'connect_args': { 'timeout': 15 } })
}
executors = {
    'default': ThreadPoolExecutor(20),
    'processpool': ProcessPoolExecutor(1)
}
job_defaults = {
    'coalesce': False,
    'max_instances': 1
}
scheduler = BackgroundScheduler(executors=executors, job_defaults=job_defaults,)
scheduler.start()