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heroku-periodical's Introduction

Heroku Periodical

A skeleton app based on Heroku/Python/Celery that runs a single worker executing periodical tasks.

This skeleton can be used to quickly run periodical tasks on the Heroku platform using an arbitrary timedelta or crontab entry. The code is based on a single worker which runs with an integrated celery beat scheduler to avoid using a separate process just for scheduling. Redis is used as the broker, based on the redistogo:nano plan.

Deployment

$ heroku create
$ heroku addons:add redistogo:nano
$ git push heroku master
$ heroku ps:scale worker=1

Try it now!

You can single-click deploy this app using the awesome Heroku Button:

Deploy to Heroku

heroku-periodical's People

Contributors

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Stargazers

Songhui Yue avatar Phil Esterman avatar 안성현 avatar k avatar Anton Kiselev avatar aubsw avatar avatar Eslam λ Hefnawy avatar Grant McGovern avatar Kaitlin Devine avatar Stefan Jenkner avatar Ogre avatar Andres Douglas avatar Vladimir Keleshev avatar Carlo Zamagni avatar avatar Jon Danao avatar Nick Snell avatar Rendong Chen avatar Kevin avatar Matías Agustín Méndez avatar Tristan Escalada avatar Ido Rosen avatar Luiz Boaretto avatar

Watchers

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Forkers

johnprog hungrysoul91 modunamu mbonea-mjema

heroku-periodical's Issues

max number of clients reached

I am getting redis.exceptions.ConnectionError: max number of clients reached continuously.

Caused by connection lost from redis
WARNING/MainProcess] consumer: Connection to broker lost. Trying to re-establish the connection...

Restart flow is b0rked

Pushing new code and restarting the worker process does not flow smoothly.

Worker process must be scaled back to 0 before pushing new code, since processes do not terminate immediately.

Two common symptoms are:

  • hanging worker process even when scaling back
  • redis reaches max connections after process restart

Maybe @kennethreitz can help out on this.

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