Fix pool size default value in config

.circleci/config.yml

@@ -233,7 +233,7 @@ jobs:
   eslint:
     docker:
       # Ensure .tool-versions matches
-      - image: circleci/node:12.15.0-browsers-legacy
+      - image: circleci/node:12.16.1-browsers-legacy
 
     working_directory: ~/app
 
@@ -275,7 +275,7 @@ jobs:
   jest:
     docker:
       # Ensure .tool-versions matches
-      - image: circleci/node:12.15.0-browsers-legacy
+      - image: circleci/node:12.16.1-browsers-legacy
 
     working_directory: ~/app
 

apps/explorer/config/dev.exs

@@ -3,7 +3,7 @@ use Mix.Config
 # Configure your database
 config :explorer, Explorer.Repo,
   url: System.get_env("DATABASE_URL"),
-  pool_size: String.to_integer(System.get_env("POOL_SIZE") || "50"),
+  pool_size: String.to_integer(System.get_env("POOL_SIZE", "50")),
   timeout: :timer.seconds(80)
 
 config :explorer, Explorer.Tracer, env: "dev", disabled?: true

apps/explorer/config/prod.exs

@@ -3,7 +3,7 @@ use Mix.Config
 # Configures the database
 config :explorer, Explorer.Repo,
   url: System.get_env("DATABASE_URL"),
-  pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10"),
+  pool_size: String.to_integer(System.get_env("POOL_SIZE", "50")),
   ssl: String.equivalent?(System.get_env("ECTO_USE_SSL") || "true", "true"),
   prepare: :unnamed,
   timeout: :timer.seconds(60)