This dyno manager only manages dynos that run within the space Dyno types The Private Spaces Runtime has a dedicated dyno manager per space. The Common Runtime has a single dyno manager per region that is responsible for managing all dynos across all tenants running in a region. The dyno manager keeps dynos running automatically so operating your app is generally hands-off and maintenance-free. One-off dynos, on the other hand, are only expected to run a short-lived command and then exit, not affecting your dyno formation. Once a web or worker dyno is started, the dyno formation of your app will change (the number of running dynos of each process type) - and subject to dyno lifecycle, Heroku will continue to maintain that dyno formation until you change it. They can also be used to run occasional background work, as with Heroku Scheduler. They can be used to handle administrative tasks, such as database migrations and console sessions. One-off: One-off dynos are temporary dynos that can run detached, or with their input/output attached to your local terminal. For more information, see Worker Dynos, Background Jobs and Queueing. For example, one for urgent jobs and another for long-running jobs. You can have multiple kinds of worker dynos in your application. Worker dynos are typically used for background jobs, queueing systems, and timed jobs. Worker: Worker dynos can be of any process type declared in your Procfile, other than “web”. Only web dynos receive HTTP traffic from the routers. Web: Web dynos are dynos of the “web” process type that is defined in your Procfile. Dyno configurationsĮvery dyno belongs to one of the three following configurations: This article describes dyno conventions on the Heroku platform.įor information about dyno pricing, see the Heroku pricing overview. All Heroku applications run in a collection of lightweight Linux containers called dynos.
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