ensure only nodes in primary region process jobs

config/config.exs

@@ -23,7 +23,8 @@ config :algora, AlgoraWeb.Endpoint,
   ]
 
 config :algora, Oban,
-  repo: Algora.Repo.Local,
+  repo: Algora.Repo,
+  notifier: Oban.Notifiers.PG,
   queues: [default: 10]
 
 config :esbuild,

config/runtime.exs

@@ -41,6 +41,13 @@ if config_env() == :prod do
     url: database_url,
     pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10")
 
+  unless Fly.RPC.is_primary?() do
+    config :algora, Oban,
+      queues: false,
+      plugins: false,
+      peer: false
+  end
+
   secret_key_base =
     System.get_env("SECRET_KEY_BASE") ||
       raise """