Skip to main content
Deploying a Chain is an atomic action that deploys every Chainlet within the Chain. Each Chainlet specifies its own remote environment — hardware resources, Python and system dependencies, autoscaling settings.

​
Published deployment

By default, pushing a Chain creates a published deployment: 
truss chains push ./my_chain.py
Where my_chain.py contains the entrypoint Chainlet for your Chain. Published deployments have access to full autoscaling settings. Each time you push, a new deployment is created.

​
Development

To create a development deployment for rapid iteration, use --watch: 
truss chains push ./my_chain.py --watch
Development deployments are intended for testing and can’t scale past one replica. Each time you make a development deployment, it overwrites the existing development deployment. Development deployments support rapid iteration with live code patching. See the watch guide.

​
Environments

To deploy a Chain to an environment, run: 
truss chains push ./my_chain.py --environment {env_name}
Environments are intended for live traffic and have access to full autoscaling settings. Each time you deploy to an environment, a new deployment is created. Once the new deployment is live, it replaces the previous deployment, which is relegated to the published deployments list. Learn more about environments.