Caching

The scope of distribution of deployments is derived from connected domains and their DNS configuration.

By default and for security reasons, deployments and environment variables are not always cached on every server. Instead, once a request hits a server, the deployment is initialised. Files are downloaded, and environment variables are fetched from a vault. After a phase of inactivity, a deployment is evicted if not connected to a custom domain. Similarly, associated environment variables are evicted if unused.

Execution environments - sandboxes, due to their more considerable use of system resources, are evicted after a shorter phase of inactivity. A request hitting a deployment without a sandbox will not trigger a whole new initialisation of a deployment. Instead, a new execution environment is set up in a couple of negligible milliseconds.