3 files changed, 19 insertions, 7 deletions
diff --git a/railties/lib/rails/tasks/dev.rake b/railties/lib/rails/tasks/dev.rake
index 5aea6f7dc5..8d75965294 100644
--- a/railties/lib/rails/tasks/dev.rake
+++ b/railties/lib/rails/tasks/dev.rake
@@ -1,10 +1,11 @@
 # frozen_string_literal: true
 
-require "rails/dev_caching"
+require "rails/command"
+require "active_support/deprecation"
 
 namespace :dev do
-  desc "Toggle development mode caching on/off"
   task :cache do
-    Rails::DevCaching.enable_by_file
+    ActiveSupport::Deprecation.warn("Using `bin/rake dev:cache` is deprecated and will be removed in Rails 6.1. Use `bin/rails dev:cache` instead.\n")
+    Rails::Command.invoke "dev:cache"
   end
 end
diff --git a/railties/lib/rails/tasks/initializers.rake b/railties/lib/rails/tasks/initializers.rake
index ae85cb0f86..7ccf7455bb 100644
--- a/railties/lib/rails/tasks/initializers.rake
+++ b/railties/lib/rails/tasks/initializers.rake
@@ -1,8 +1,10 @@
 # frozen_string_literal: true
 
+require "rails/command"
+require "active_support/deprecation"
+
 desc "Print out all defined initializers in the order they are invoked by Rails."
-task initializers: :environment do
-  Rails.application.initializers.tsort_each do |initializer|
-    puts "#{initializer.context_class}.#{initializer.name}"
-  end
+task :initializers do
+  ActiveSupport::Deprecation.warn("Using `bin/rake initializers` is deprecated and will be removed in Rails 6.1. Use `bin/rails initializers` instead.\n")
+  Rails::Command.invoke "initializers"
 end
diff --git a/railties/lib/rails/tasks/routes.rake b/railties/lib/rails/tasks/routes.rake
new file mode 100644
index 0000000000..21ce900a8c
--- /dev/null
+++ b/railties/lib/rails/tasks/routes.rake
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+require "rails/command"
+require "active_support/deprecation"
+
+task routes: :environment do
+  ActiveSupport::Deprecation.warn("Using `bin/rake routes` is deprecated and will be removed in Rails 6.1. Use `bin/rails routes` instead.\n")
+  Rails::Command.invoke "routes"
+end