diff --git a/config/environments/production.rb b/config/environments/production.rb
index cc1793880ae..59845549237 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -1,4 +1,5 @@
 require "active_support/core_ext/integer/time"
+require_relative "../../lib/gemcutter/middleware/redirector"
 
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
@@ -115,6 +116,5 @@
     value_max_bytes: 2_097_152 # 2MB
   }
 
-  require_relative "../../lib/gemcutter/middleware/redirector"
   config.middleware.use Gemcutter::Middleware::Redirector
 end
diff --git a/config/environments/staging.rb b/config/environments/staging.rb
index ae4726d99a0..c7486aa792b 100644
--- a/config/environments/staging.rb
+++ b/config/environments/staging.rb
@@ -1,4 +1,5 @@
 require Rails.root.join("config", "secret") if Rails.root.join("config", "secret.rb").file?
+require "active_support/core_ext/integer/time"
 require_relative "../../lib/gemcutter/middleware/redirector"
 
 Rails.application.configure do
@@ -7,14 +8,13 @@
   # Code is not reloaded between requests.
   config.enable_reloading = false
 
-  # Eager load code on boot. This eager loads most of Rails and
-  # your application in memory, allowing both threaded web servers
-  # and those relying on copy on write to perform better.
-  # Rake tasks automatically ignore this option for performance.
+  # Eager load code on boot for better performance and memory savings (ignored by Rake tasks).
   config.eager_load = true
 
-  # Full error reports are disabled and caching is turned on.
-  config.consider_all_requests_local       = false
+  # Full error reports are disabled.
+  config.consider_all_requests_local = false
+
+  # Turn on fragment caching in view templates.
   config.action_controller.perform_caching = true
 
   # Attempt to read encrypted secrets from `config/secrets.yml.enc`.
@@ -58,21 +58,32 @@
 
   # Use the lowest log level to ensure availability of diagnostic information
   # when problems arise.
-  config.log_level = ENV['RAILS_LOG_LEVEL'].present? ? ENV['RAILS_LOG_LEVEL'].to_sym : :info
+  $stdout.sync = true
   config.rails_semantic_logger.format = :json
   config.rails_semantic_logger.semantic = true
   config.rails_semantic_logger.add_file_appender = false
-  SemanticLogger.add_appender(io: $stdout, formatter: :json)
+  config.semantic_logger.add_appender(io: $stdout, formatter: config.rails_semantic_logger.format)
 
   # Prepend all log lines with the following tags.
   # config.log_tags = [ :request_id ]
 
+  # "info" includes generic and useful information about system operation, but avoids logging too much
+  # information to avoid inadvertent exposure of personally identifiable information (PII). If you
+  # want to log everything, set the level to "debug".
+  config.log_level = ENV.fetch("RAILS_LOG_LEVEL", "info")
+
+  # Don't log any deprecations.
+  config.active_support.report_deprecations = false
+
   # Use a different cache store in production.
   # config.cache_store = :mem_cache_store
 
   # Use a real queuing backend for Active Job (and separate queues per environment)
   # config.active_job.queue_adapter     = :resque
   # config.active_job.queue_name_prefix = "gemcutter_#{Rails.env}"
+
+  # Disable caching for Action Mailer templates even if Action Controller
+  # caching is enabled.
   config.action_mailer.perform_caching = false
 
   # Ignore bad email addresses and do not raise email delivery errors.
@@ -83,16 +94,17 @@
 
   # roadie-rails recommends not setting action_mailer.asset_host and use its own configuration for URL options
   config.roadie.url_options = { host: Gemcutter::HOST, scheme: Gemcutter::PROTOCOL }
+
   # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
   # the I18n.default_locale when a translation cannot be found).
-  config.i18n.fallbacks = [:en]
-
-  # Send deprecation notices to registered listeners.
-  config.active_support.deprecation = :notify
+  config.i18n.fallbacks = true
 
   # Do not dump schema after migrations.
   config.active_record.dump_schema_after_migration = false
 
+  # Only use :id for inspections in production.
+  config.active_record.attributes_for_inspect = [:id]
+
   config.cache_store = :mem_cache_store, ENV['MEMCACHED_ENDPOINT'], {
     failover: true,
     socket_timeout: 1.5,