datalevin-example.apps.garden

A demo for setting up datalevin within application.garden projects.

Deploy Strategy

When using Datalevin with file storage back-end, app must be restarted on re-deploy, otherwise you'll see resource unavailable errors or similar:

Platform constant error code: EAGAIN Resource temporarily unavailable (11)

Make sure to include :deploy-strategy :restart in your garden.edn file.

JVM Opts

These JVM opts are required for Datalevin to access the file storage, make sure to include them in :nextjournal/garden alias in deps.edn:

{:aliases
 :nextjournal/garden
 {:exec-fn your.ns/-main
  :jvm-opts ["--add-opens=java.base/java.nio=ALL-UNNAMED"
             "--add-opens=java.base/sun.nio.ch=ALL-UNNAMED"]}}

You can find more details in the Datalevin's install docs.