fix pool sizes

config/prod.exs

@@ -1,7 +1,6 @@
 import Config
 
-# Do not print debug messages in production
-config :logger, level: :info
+config :logger, level: :debug
 
 # Runtime production configuration, including reading
 # of environment variables, is done on config/runtime.exs.

config/runtime.exs

@@ -7,6 +7,20 @@ import Config
 # any compile-time configuration in here, as it won't be applied.
 # The block below contains prod specific runtime configuration.
 
+logger_level =
+  case System.get_env("LOG_LEVEL", "info") do
+    "debug" -> :debug
+    "info" -> :info
+    "warn" -> :warning
+    "error" -> :error
+    val when val in ["warning", "error"] -> :error
+    _ -> :info
+  end
+
+config :logger, level: logger_level
+
+config :logger, :console, format: {Logger.Formatter, :format}
+
 # ## Using releases
 #
 # If you use `mix release`, you need to explicitly enable the server
@@ -39,13 +53,13 @@ if config_env() == :prod do
 
   config :policy_service, PolicyService.Repo,
     url: database_url,
-    pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10"),
+    pool_size: 1,
     socket_options: maybe_ipv6
 
   config :policy_service, PolicyService.EventStore,
     serializer: Commanded.Serialization.JsonSerializer,
     url: database_url,
-    pool_size: 5
+    pool_size: 1
 
   secret_key_base =
     System.get_env("SECRET_KEY_BASE") ||