caching

.ruby-version

@@ -1 +1 @@
-2.5.0
+2.4.3

Dockerfile

@@ -1,4 +1,4 @@
-FROM phusion/passenger-ruby25:latest
+FROM phusion/passenger-ruby24:latest
 
 # Use baseimage-docker's init process.
 CMD ["/sbin/my_init"]

Gemfile

@@ -5,7 +5,9 @@ gem 'pg', '~> 0.21.0'
 
 gem 'webpacker', '3.4.1'
 gem 'bootsnap', '>= 1.1.0', require: false
-gem 'jbuilder', '~> 2.7'
+
+#gem 'jbuilder', '~> 2.7'
+gem 'jbuilder', git: 'https://github.com/rails/jbuilder', branch: 'master'
 
 gem 'oj', '~> 3.5.0'
 
@@ -13,6 +15,8 @@ gem 'kaminari', '~> 1.1.1'
 gem 'unitwise', '~> 2.2.0'
 gem 'redcarpet', '~> 3.4.0'
 
+gem 'dalli', '~> 2.7.6'
+
 # Use ActiveModel has_secure_password
 gem 'bcrypt', '~> 3.1.11'
 

Gemfile.lock

@@ -1,3 +1,12 @@
+GIT
+  remote: https://github.com/rails/jbuilder
+  revision: a0dc0bd42737aaef3dd622d8338a816aed03c8ff
+  branch: master
+  specs:
+    jbuilder (2.7.0)
+      activesupport (>= 4.2.0)
+      multi_json (>= 1.2)
+
 GEM
   remote: https://rubygems.org/
   specs:
@@ -50,6 +59,7 @@ GEM
     coderay (1.1.2)
     concurrent-ruby (1.0.5)
     crass (1.0.3)
+    dalli (2.7.7)
     database_cleaner (1.6.2)
     diff-lcs (1.3)
     erubi (1.7.1)
@@ -78,9 +88,6 @@ GEM
       rspec (>= 2.99.0, < 4.0)
     i18n (1.0.0)
       concurrent-ruby (~> 1.0)
-    jbuilder (2.7.0)
-      activesupport (>= 4.2.0)
-      multi_json (>= 1.2)
     kaminari (1.1.1)
       activesupport (>= 4.1.0)
       kaminari-actionview (= 1.1.1)
@@ -224,11 +231,12 @@ PLATFORMS
 DEPENDENCIES
   bcrypt (~> 3.1.11)
   bootsnap (>= 1.1.0)
+  dalli (~> 2.7.6)
   database_cleaner (~> 1.6.2)
   factory_bot_rails (~> 4.8.2)
   guard (~> 2.14.0)
   guard-rspec
-  jbuilder (~> 2.7)
+  jbuilder!
   kaminari (~> 1.1.1)
   oj (~> 3.5.0)
   pg (~> 0.21.0)

app/models/recipe_ingredient.rb

@@ -1,7 +1,7 @@
 class RecipeIngredient < ApplicationRecord
 
   belongs_to :ingredient, optional: true
-  belongs_to :recipe, inverse_of: :recipe_ingredients
+  belongs_to :recipe, inverse_of: :recipe_ingredients, touch: true
 
   validates :sort_order, presence: true
 

app/views/ingredients/index.json.jbuilder

@@ -1,8 +1,10 @@
 
-json.extract! @ingredients, :total_count, :total_pages, :current_page
+json.cache_root! [Ingredient.all, @ingredients] do
-json.page_size @ingredients.limit_value
 
-json.ingredients @ingredients do |i|
+  json.extract! @ingredients, :total_count, :total_pages, :current_page
+  json.page_size @ingredients.limit_value
+
+  json.ingredients @ingredients do |i|
     json.extract! i, :id, :name, :ndbn, :kcal
     json.usda i.ndbn.present?
 
@@ -13,5 +15,6 @@ json.ingredients @ingredients do |i|
       json.density nil
     end
 
-end
+  end
 
+end

app/views/recipes/index.json.jbuilder

@@ -1,10 +1,13 @@
 
-json.extract! @recipes, :total_count, :total_pages, :current_page
+json.cache_root! [Recipe.all, @recipes] do
-json.page_size @recipes.limit_value
 
-json.recipes @recipes do |r|
+  json.extract! @recipes, :total_count, :total_pages, :current_page
+  json.page_size @recipes.limit_value
+
+  json.recipes @recipes do |r|
     json.extract! r, :id, :name, :rating, :yields, :total_time, :active_time, :created_at, :updated_at
 
     json.tags r.tag_names
-end
+  end
 
+end

app/views/recipes/show.json.jbuilder

@@ -1,11 +1,12 @@
+json.cache_root! [@recipe] do
 
-json.extract! @recipe, :id, :name, :rating, :yields, :total_time, :active_time, :created_at, :updated_at, :step_text
+  json.extract! @recipe, :id, :name, :rating, :yields, :total_time, :active_time, :created_at, :updated_at, :step_text
 
-json.rendered_steps MarkdownProcessor.render(@recipe.step_text)
+  json.rendered_steps MarkdownProcessor.render(@recipe.step_text)
 
-json.tags @recipe.tag_names
+  json.tags @recipe.tag_names
 
-json.ingredients @recipe.recipe_ingredients do |ri|
+  json.ingredients @recipe.recipe_ingredients do |ri|
     json.extract! ri, :id, :ingredient_id, :display_name, :name, :quantity, :units, :preparation, :sort_order
 
     json.ingredient do
@@ -17,9 +18,9 @@ json.ingredients @recipe.recipe_ingredients do |ri|
     end
 
     json._destroy false
-end
+  end
 
-json.nutrition_data do
+  json.nutrition_data do
     json.errors @recipe.nutrition_data.errors
 
     json.nutrients NutritionData::NUTRIENTS.select { |_, v| v.present? } do |name, label|
@@ -28,4 +29,6 @@ json.nutrition_data do
       json.value @recipe.nutrition_data.send(name)
     end
 
+  end
+
 end

config/application.rb

@@ -24,6 +24,10 @@ module Parsley
     # -- all .rb files in that directory are automatically loaded.
     config.load_defaults 5.2
 
+    if ENV['RAILS_USE_MEMCACHE'] == 'true'
+      config.cache_store = :mem_cache_store, ENV['RAILS_MEMCACHE_HOST'] || 'memcache'
+    end
+
     # Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.
     # Run "rake -D time" for a list of tasks for finding time zone names. Default is UTC.
     config.time_zone = 'Central Time (US & Canada)'

config/environments/development.rb

@@ -14,11 +14,16 @@ Rails.application.configure do
   # Show full error reports.
   config.consider_all_requests_local = true
 
+  memcache_enabled = ENV['RAILS_USE_MEMCACHE'] == 'true'
+
   # Enable/disable caching. By default caching is disabled.
-  if Rails.root.join('tmp/caching-dev.txt').exist?
+  if Rails.root.join('tmp/caching-dev.txt').exist? || memcache_enabled
     config.action_controller.perform_caching = true
 
+    unless memcache_enabled
       config.cache_store = :memory_store
+    end
+
     config.public_file_server.headers = {
       'Cache-Control' => 'public, max-age=172800'
     }

docker-compose.yml

@@ -8,12 +8,21 @@ services:
       - POSTGRES_USER=parsley
     volumes:
       - sql-data:/var/lib/postgresql/data
+
+  memcache:
+      image: memcached:1.5.4-alpine
+      command: memcached -m 512
+
   web:
     build: .
+    environment:
+      - RAILS_USE_MEMCACHE=true
+      - RAILS_LOG_TO_STDOUT=true
     ports:
       - "3000:80"
     links:
       - postgres
+
 volumes:
   sql-data:
     driver: local

docker/nginx_env.conf

@@ -1,3 +1,6 @@
+env RAILS_LOG_TO_STDOUT;
+env RAILS_USE_MEMCACHE;
+env RAILS_MEMCACHE_HOST;
 env PARSLEY_DB_HOST;
 env PARSLEY_DB_USER;
 env PARSLEY_DB_PASSWORD;