Add sql count in dev and footer

Gemfile

@@ -43,6 +43,9 @@ gem "kamal", require: false
 # Add HTTP asset caching/compression and X-Sendfile acceleration to Puma [https://github.com/basecamp/thruster/]
 gem "thruster", require: false
 
+# For query count tracking
+gem "query_count"
+
 # Use Active Storage variants [https://guides.rubyonrails.org/active_storage_overview.html#transforming-images]
 # gem "image_processing", "~> 1.2"
 
@@ -69,6 +72,13 @@ end
 group :development do
   # Use console on exceptions pages [https://github.com/rails/web-console]
   gem "web-console"
+
+  # Rack Mini Profiler [https://github.com/MiniProfiler/rack-mini-profiler]
+  gem "rack-mini-profiler"
+  # For memory profiling via RMP
+  gem "memory_profiler"
+  # For call-stack profiling flamegraphs via RMP
+  gem "stackprof"
 end
 
 group :test do

Gemfile.lock

@@ -199,6 +199,7 @@ GEM
       net-smtp
     marcel (1.0.4)
     matrix (0.4.2)
+    memory_profiler (1.1.0)
     meta-tags (2.22.1)
       actionpack (>= 6.0.0, < 8.1)
     method_source (1.1.0)
@@ -260,9 +261,14 @@ GEM
     public_suffix (6.0.1)
     puma (6.6.0)
       nio4r (~> 2.0)
+    query_count (1.1.1)
+      activerecord (>= 4.2)
+      railties (>= 4.2)
     raabro (1.4.0)
     racc (1.8.1)
     rack (2.2.11)
+    rack-mini-profiler (3.3.1)
+      rack (>= 1.2.0)
     rack-session (1.0.2)
       rack (< 3)
     rack-test (2.2.0)
@@ -380,6 +386,7 @@ GEM
       net-sftp (>= 2.1.2)
       net-ssh (>= 2.8.0)
       ostruct
+    stackprof (0.2.27)
     stimulus-rails (1.3.4)
       railties (>= 6.0.0)
     stringio (3.1.3)
@@ -442,10 +449,13 @@ DEPENDENCIES
   importmap-rails
   jbuilder
   kamal
+  memory_profiler
   paper_trail
   pg
   propshaft
   puma (>= 5.0)
+  query_count
+  rack-mini-profiler
   rails (~> 8.0.1)
   rubocop-rails-omakase
   selenium-webdriver
@@ -453,6 +463,7 @@ DEPENDENCIES
   solid_cache
   solid_queue
   sqlite3 (>= 2.1)
+  stackprof
   stimulus-rails
   thruster
   turbo-rails

app/views/layouts/application.html.erb

@@ -44,8 +44,13 @@
     <%= yield %>
 
     <footer>
-      Build <%= Rails.application.config.git_version %> from <%= time_ago_in_words(Rails.application.config.server_start_time) %> ago.
-      <%= pluralize(Heartbeat.cached_recent_count, 'heartbeat') %> in the last 24 hours.
+      <div class="container">
+        <p>
+          Build <%= Rails.application.config.git_version %> from <%= time_ago_in_words(Rails.application.config.server_start_time) %> ago.
+          <%= pluralize(Heartbeat.cached_recent_count, 'heartbeat') %> in the last 24 hours.
+          (DB: <%= pluralize(QueryCount::Counter.counter, "query") %>, <%= QueryCount::Counter.counter_cache %> cached)
+        </p>
+      </div>
     </footer>
   </body>
 </html>