Starting Xandra process for migrations

Questions & Help Questions
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Here xandra is a child process for the Your Application Supervisor, So you can start the Xandra before migration, by writing this line start_apps_before_migration: [:my_app] in your Repo configuration. This means you are starting your application before migration. Your config.exs may look like -

config :my_app, MyApp.Repo,
  username: .....,
  password: .....,
  database: "my_app_db,
  hostname: "localhost",
  pool_size: 10,
  start_apps_before_migration: [:my_app]