Merge pull request #7648 from Matt-Yorkley/redis

Switch cache store from memcached to redis

Gemfile

@@ -82,6 +82,9 @@ gem 'rack-rewrite'
 gem 'rack-ssl', require: 'rack/ssl'
 gem 'roadie-rails', '~> 2.2.0'
 
+gem 'redis', '>= 4.0', require: ['redis', 'redis/connection/hiredis']
+gem 'hiredis'
+
 gem 'combine_pdf'
 gem 'wicked_pdf'
 gem 'wkhtmltopdf-binary'

Gemfile.lock

@@ -285,6 +285,7 @@ GEM
       tilt
     hashdiff (1.0.1)
     highline (2.0.3)
+    hiredis (0.6.3)
     i18n (1.8.10)
       concurrent-ruby (~> 1.0)
     i18n-js (3.8.2)
@@ -447,6 +448,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     redcarpet (3.5.1)
+    redis (4.2.5)
     regexp_parser (2.1.1)
     request_store (1.5.0)
       rack (>= 1.4)
@@ -672,6 +674,7 @@ DEPENDENCIES
   good_migrations
   haml
   highline (= 2.0.3)
+  hiredis
   i18n
   i18n-js (~> 3.8.2)
   immigrant
@@ -706,6 +709,7 @@ DEPENDENCIES
   rails_safe_tasks (~> 1.0)
   ransack (= 2.4.1)
   redcarpet
+  redis (>= 4.0)
   responders
   roadie-rails (~> 2.2.0)
   roo (~> 2.8.3)

config/application.yml.example

@@ -66,5 +66,3 @@ SMTP_PASSWORD: 'f00d'
 # config/initializers/feature_toggles.rb for details.
 #
 # BETA_TESTERS: ofn@example.com,superadmin@example.com
-
-MEMCACHED_VALUE_MAX_MEGABYTES: '4'

config/environments/development.rb

@@ -11,7 +11,14 @@ Openfoodnetwork::Application.configure do
   config.cache_classes = !!ENV["PROFILE"]
 
   # :file_store is used by default when no cache store is specifically configured.
-  config.cache_store = :memory_store if !!ENV["PROFILE"]
+  if !!ENV["PROFILE"]
+    config.cache_store = :redis_cache_store, {
+      driver: :hiredis,
+      url: ENV.fetch("OFN_REDIS_URL", "redis://localhost:6379/0"),
+      namespace: "cache",
+      expires_in: 90.minutes
+    }
+  end
 
   config.eager_load = false
 

config/environments/production.rb

@@ -42,9 +42,12 @@ Openfoodnetwork::Application.configure do
   config.log_formatter = Logger::Formatter.new.tap { |f| f.datetime_format = "%Y-%m-%d %H:%M:%S" }
 
   # Use a different cache store in production
-  memcached_value_max_megabytes = ENV.fetch("MEMCACHED_VALUE_MAX_MEGABYTES", 1).to_i
-  memcached_value_max_bytes = memcached_value_max_megabytes * 1024 * 1024
-  config.cache_store = :mem_cache_store, { value_max_bytes: memcached_value_max_bytes }
+  config.cache_store = :redis_cache_store, {
+    driver: :hiredis,
+    url: ENV.fetch("OFN_REDIS_URL", "redis://localhost:6379/0"),
+    namespace: "cache",
+    reconnect_attempts: 1
+  }
 
   # Enable serving of images, stylesheets, and JavaScripts from an asset server
   # config.action_controller.asset_host = "http://assets.example.com"

config/environments/staging.rb

@@ -42,9 +42,12 @@ Openfoodnetwork::Application.configure do
   config.log_formatter = Logger::Formatter.new.tap { |f| f.datetime_format = "%Y-%m-%d %H:%M:%S" }
 
   # Use a different cache store in production
-  memcached_value_max_megabytes = ENV.fetch("MEMCACHED_VALUE_MAX_MEGABYTES", 1).to_i
-  memcached_value_max_bytes = memcached_value_max_megabytes * 1024 * 1024
-  config.cache_store = :mem_cache_store, { value_max_bytes: memcached_value_max_bytes }
+  config.cache_store = :redis_cache_store, {
+    driver: :hiredis,
+    url: ENV.fetch("OFN_REDIS_URL", "redis://localhost:6379/0"),
+    namespace: "cache",
+    reconnect_attempts: 1
+  }
 
   # Enable serving of images, stylesheets, and JavaScripts from an asset server
   # config.action_controller.asset_host = "http://assets.example.com"