Install rack-mini-profiler

Gemfile

@@ -13,13 +13,17 @@ gem 'ddtrace', '~> 0.48.0'
 gem 'devise', '>= 4.6.0'
 gem 'devise-guests', '~> 0.6'
 gem 'faraday'
+gem 'flamegraph'
 gem 'high_voltage', '~> 3.1'
 gem 'lograge'
+gem 'memory_profiler'
 gem 'puma', '~> 4.3'
+gem 'rack-mini-profiler'
 gem 'rails', '~> 6.0.4'
 gem 'redis', '~> 4.2'
 gem 'rsolr', '>= 1.0'
 gem 'rubyzip'
+gem 'stackprof'
 gem 'webpacker'
 
 gem 'blacklight'

Gemfile.lock

@@ -195,6 +195,7 @@ GEM
     ffi-compiler (1.0.1)
       ffi (>= 1.0.0)
       rake
+    flamegraph (0.9.5)
     foreman (0.63.0)
       dotenv (>= 0.7)
       thor (>= 0.13.6)
@@ -253,6 +254,7 @@ GEM
     marc-fastxmlwriter (1.0.0)
       marc (~> 1.0)
     marcel (1.0.1)
+    memory_profiler (1.0.0)
     method_source (1.0.0)
     mini_mime (1.1.0)
     mini_portile2 (2.5.3)
@@ -291,6 +293,8 @@ GEM
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
+    rack-mini-profiler (2.3.2)
+      rack (>= 1.2.0)
     rack-protection (2.1.0)
       rack
     rack-proxy (0.6.5)
@@ -424,6 +428,7 @@ GEM
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
     sqlite3 (1.4.2)
+    stackprof (0.2.17)
     thor (1.1.0)
     thread_safe (0.3.6)
     tilt (2.0.10)
@@ -493,14 +498,17 @@ DEPENDENCIES
   devise (>= 4.6.0)
   devise-guests (~> 0.6)
   faraday
+  flamegraph
   foreman (~> 0.63.0)
   high_voltage (~> 3.1)
   listen (>= 3.0.5, < 3.2)
   lograge
+  memory_profiler
   mysql2 (>= 0.4.4, < 0.6.0)
   niftany (~> 0.9)
   pry-byebug
   puma (~> 4.3)
+  rack-mini-profiler
   rails (~> 6.0.4)
   rails-controller-testing
   redis (~> 4.2)
@@ -514,6 +522,7 @@ DEPENDENCIES
   spring
   spring-watcher-listen (~> 2.0.0)
   sqlite3
+  stackprof
   vcr
   web-console
   webdrivers (~> 4.0)

app/controllers/application_controller.rb

@@ -13,4 +13,9 @@ class ApplicationController < ActionController::Base
   ActionController::Parameters.permit_all_parameters = true
 
   helper_method :blackcat_config
+
+  before_action do
+    # @todo Need to limit this to admin users only
+    Rack::MiniProfiler.authorize_request
+  end
 end

config/initializers/mini_profiler.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+# Do not let rack-mini-profiler disable caching
+Rack::MiniProfiler.config.disable_caching = false
+
+# Store data in Redis, which can be shared accross multiple containers
+Rack::MiniProfiler.config.storage_options = { url: Settings.redis.sessions.uri }
+Rack::MiniProfiler.config.storage = Rack::MiniProfiler::RedisStore