5.4 enabled caching in dev environment

config/environments/development.rb

@@ -23,14 +23,14 @@ Rails.application.configure do
     config.action_controller.perform_caching = true
     config.action_controller.enable_fragment_cache_logging = true
 
-    config.cache_store = :memory_store
+    config.cache_store = :file_store, "tmp/cache_store"
     config.public_file_server.headers = {
       "Cache-Control" => "public, max-age=#{2.days.to_i}"
     }
   else
     config.action_controller.perform_caching = false
 
-    config.cache_store = :null_store
+    config.cache_store = :file_store, "tmp/cache_store"
   end
 
   # Store uploaded files on the local file system (see config/storage.yml for options).

config/environments/test.rb

@@ -25,7 +25,7 @@ Rails.application.configure do
   # Show full error reports and disable caching.
   config.consider_all_requests_local       = true
   config.action_controller.perform_caching = false
-  config.cache_store = :null_store
+  config.cache_store = :memory_store
 
   # Raise exceptions instead of rendering exception templates.
   config.action_dispatch.show_exceptions = false