diff --git a/config/puma.rb b/config/puma.rb
index fda772af..62a2e7ce 100644
--- a/config/puma.rb
+++ b/config/puma.rb
@@ -23,14 +23,14 @@ environment ENV.fetch("RAILS_ENV") { "development" }
 # Workers do not work on JRuby or Windows (both of which do not support
 # processes).
 #
-# workers ENV.fetch("WEB_CONCURRENCY") { 2 }
+workers ENV.fetch("WEB_CONCURRENCY") { 4 }
 
 # Use the `preload_app!` method when specifying a `workers` number.
 # This directive tells Puma to first boot the application and load code
 # before forking the application. This takes advantage of Copy On Write
 # process behavior so workers use less memory.
 #
-# preload_app!
+preload_app!
 
 # Allow puma to be restarted by `rails restart` command.
 plugin :tmp_restart
diff --git a/sample.env b/sample.env
index 15dd119f..846000cd 100644
--- a/sample.env
+++ b/sample.env
@@ -243,3 +243,15 @@ DB_PASSWORD=password
 #   invite - For invite only registration
 #   approval - For approve/decline registration
 DEFAULT_REGISTRATION=open
+
+# Web server settings
+#
+# The size of the thread pool per worker used by Greenlight's web server.
+# For details, see: https://github.com/puma/puma#thread-pool
+# Default: 5
+#RAILS_MAX_THREADS=5
+#
+# The amount of workers (separate processes) used by the web server.
+# For details, see: https://github.com/puma/puma#clustered-mode
+# Default: 4
+#WEB_CONCURRENCY=4