Summary
Redis within a Ruby on Rails application has many benefits. Learn to interact with Redis Server and set it up for caching within your application.rails cache performance 5:42
Resources
redis-rb gem - https://github.com/redis/redis-rb
redis-rails gem - https://github.com/redis-store/redis-rails
Redis Server - https://redis.io/
redis-rails gem - https://github.com/redis-store/redis-rails
Redis Server - https://redis.io/
Summary
# MacOS Terminal brew install redis brew services start redis
# Ubuntu Terminal sudo apt install redis-server
# irb 2.3.3 :001 > require 'redis' => true 2.3.3 :002 > redis = Redis.new => # 2.3.3 :003 > redis.set 'key', 'value' => "OK" 2.3.3 :004 > redis.get 'key' => "value"
Using Redis as a cache
# Gemfile gem 'redis-rails'
# config/environments/development.rb
config.cache_store = :redis_store, {
host: 'localhost',
port: 6379,
db: 0,
namespace: '056redis'
}You will also need to configure the production environment file with the Redis cache. Instead of specifying the values within each configuration file, I recommend using the secrets.yml file instead. For example,
# config/environments/development.rb
config.cache_store = :redis_store, {
host: Rails.application.secrets.redis_server,
port: Rails.application.secrets.redis_port,
db: Rails.application.secrets.redis_cache_database,
namespace: Rails.application.secrets.redis_cache_namespace
}# secrets.yml development: secret_key_base: ... redis_server: localhost redis_port: 6379 redis_cache_database: 0 redis_cache_namespace: '056redis'
# index.html <% cache 'word-of-the-hour', expires_in: Time.now.beginning_of_hour + 1.hour do %> <%= %w(happy developer watch drifting ruby screencasts about rails).sample %> <% end %>