Merge pull request #320 from openstax/puma_5_2

Ruby 2.7 and Puma 5.2 config options

.github/workflows/assets.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-ruby@v1
         with:
-          ruby-version: 2.6
+          ruby-version: 2.7
       - uses: actions/cache@v2
         with:
           path: vendor/bundle

.github/workflows/migrations.yml

@@ -44,7 +44,7 @@ jobs:
       # Install ruby
       - uses: actions/setup-ruby@v1
         with:
-          ruby-version: 2.6
+          ruby-version: 2.7
 
       # Retrieve gem cache for merge commit parent
       - uses: actions/cache@v2

.github/workflows/tests.yml

@@ -26,7 +26,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-ruby@v1
         with:
-          ruby-version: 2.6
+          ruby-version: 2.7
       - uses: actions/cache@v2
         with:
           path: vendor/bundle

.ruby-version

@@ -1 +1 @@
-2.6.1
+2.7.2

Gemfile

@@ -17,7 +17,6 @@ gem 'bootstrap-sass'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0'
 
-
 # Use Uglifier as compressor for JavaScript assets
 gem 'uglifier', '>= 1.3.0'
 

config/puma.rb

@@ -89,3 +89,10 @@
 
 # Allow puma to be restarted by `rails restart` command.
 plugin :tmp_restart
+
+# Call GC.start and GC.compact before forking to try to reduce worker memory usage
+nakayoshi_fork
+
+# Adds a small delay before accepting requests if the worker (process) has threads already
+# processing other requests, to try to get idle workers to accept the request
+wait_for_less_busy_worker ENV.fetch('WAIT_FOR_LESS_BUSY_WORKERS', '0.005').to_f