Replace Redis with Solid Cache

Gemfile

@@ -11,7 +11,7 @@ gem 'jsbundling-rails'
 gem 'cssbundling-rails'
 gem 'turbo-rails'
 gem 'stimulus-rails'
-gem 'redis', '~> 5'
+gem 'solid_cache', '~> 1'
 gem 'solid_queue', '~> 1'
 gem 'mission_control-jobs'
 # gem 'image_processing', '~> 1'

Gemfile.lock

@@ -280,10 +280,6 @@ GEM
       ffi (~> 1.0)
     rdoc (6.7.0)
       psych (>= 4.0.0)
-    redis (5.3.0)
-      redis-client (>= 0.22.0)
-    redis-client (0.22.2)
-      connection_pool
     regexp_parser (2.9.2)
     reline (0.5.11)
       io-console (~> 0.5)
@@ -337,6 +333,10 @@ GEM
       concurrent-ruby (~> 1.0, >= 1.0.2)
     skylight (6.0.4)
       activesupport (>= 5.2.0)
+    solid_cache (1.0.6)
+      activejob (>= 7.2)
+      activerecord (>= 7.2)
+      railties (>= 7.2)
     solid_queue (1.0.1)
       activejob (>= 7.1)
       activerecord (>= 7.1)
@@ -400,12 +400,12 @@ DEPENDENCIES
   pry-rails
   puma (~> 6)
   rails (~> 8)
-  redis (~> 5)
   rubocop-rails-omakase
   scrypt (~> 3)
   selenium-webdriver
   sentry-rails
   skylight
+  solid_cache (~> 1)
   solid_queue (~> 1)
   spring
   spring-watcher-listen

README.md

@@ -17,6 +17,7 @@ In favor of
 - [Bootstrap](https://github.com/twbs/bootstrap)
 - [FontAwesome](https://github.com/FortAwesome/font-awesome-sass)
 - [Rails Authentication Generator](https://www.bigbinary.com/blog/rails-8-introduces-a-basic-authentication-generator)
+- [Solid Cache](https://github.com/rails/solid_cache)
 - [Solid Queue](https://github.com/rails/solid_queue)
 
 In favor of services

config/cable.yml

@@ -1,11 +1,8 @@
 development:
-  adapter: redis
-  url: redis://localhost:6379/1
+  adapter: async
 
 test:
   adapter: test
 
 production:
-  adapter: redis
-  url: <%= ENV.fetch("REDIS_URL") { "redis://localhost:6379/1" } %>
-  channel_prefix: rails_skeleton_production
+  adapter: async

config/cache.yml

@@ -0,0 +1,16 @@
+default: &default
+  store_options:
+    # Cap age of oldest cache entry to fulfill retention policies
+    # max_age: <%= 60.days.to_i %>
+    max_size: <%= 256.megabytes %>
+    namespace: <%= Rails.env %>
+
+development:
+  <<: *default
+
+test:
+  <<: *default
+
+production:
+  database: cache
+  <<: *default

config/database.yml

@@ -25,6 +25,10 @@ development:
   primary: &primary_development
     <<: *default
     database: rails_skeleton_development
+  cache:
+    <<: *primary_development
+    database: rails_skeleton_development_cache
+    migrations_paths: db/cache_migrate
   queue:
     <<: *primary_development
     database: rails_skeleton_development_queue
@@ -89,6 +93,10 @@ production:
     database: rails_skeleton_production
     username: rails_skeleton
     password: <%= ENV["RAILS_SKELETON_DATABASE_PASSWORD"] %>
+  cache:
+    <<: *primary_production
+    database: rails_skeleton_production_cache
+    migrations_paths: db/cache_migrate
   queue:
     <<: *primary_production
     database: rails_skeleton_production_queue

config/environments/production.rb

@@ -47,7 +47,8 @@
   config.active_support.report_deprecations = false
 
   # Replace the default in-process memory cache store with a durable alternative.
-  # config.cache_store = :mem_cache_store
+  config.cache_store = :solid_cache_store
+  config.solid_cache.connects_to = { database: { writing: :cache } }
 
   # Replace the default in-process and non-durable queuing backend for Active Job.
   config.active_job.queue_adapter = :solid_queue

db/cache_schema.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+ActiveRecord::Schema[7.2].define(version: 1) do
+  create_table "solid_cache_entries", force: :cascade do |t|
+    t.binary "key", limit: 1024, null: false
+    t.binary "value", limit: 536870912, null: false
+    t.datetime "created_at", null: false
+    t.integer "key_hash", limit: 8, null: false
+    t.integer "byte_size", limit: 4, null: false
+    t.index ["byte_size"], name: "index_solid_cache_entries_on_byte_size"
+    t.index ["key_hash", "byte_size"], name: "index_solid_cache_entries_on_key_hash_and_byte_size"
+    t.index ["key_hash"], name: "index_solid_cache_entries_on_key_hash", unique: true
+  end
+end