... ... config.cache_store = :redis_store, { url: 'redis://localhost', port: 6379, db: 0 } ... ... # 書き込み > Rails.cache.write('aaa', 'aaa') => "OK" > Redis.current.with { |redis| redis.set('bbb', 'bbb') } => "OK" # 読み込み > Rails.cache.read('aaa') => 'aaa' > Redis.current.with { |redis| redis.get('bbb') } => 'bbb' # キャッシュクリア後読み込み > Rails.cache.clear => nil > Rails.cache.read('aaa') => nil > Redis.cu
![redis_storeを使っているときRails.cache.clearはDBをまるまる吹っ飛ばすから注意 - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/b18a57d3cc1a8db0f07c95df2052ddf90ff37128/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-9f5428127621718a910c8b63951390ad.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-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%26mark-x%3D142%26mark-y%3D112%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTYxNiZ0eHQ9JTQwazV0cmlzbWVnaXN0dXMmdHh0LWNvbG9yPSUyMzIxMjEyMSZ0eHQtZm9udD1IaXJhZ2lubyUyMFNhbnMlMjBXNiZ0eHQtc2l6ZT0zNiZ0eHQtYWxpZ249bGVmdCUyQ3RvcCZzPWJlNDFhOGI2MTg3YThlZTU2NjE1N2JkMzBiMzU3YzIz%26blend-x%3D142%26blend-y%3D491%26blend-mode%3Dnormal%26s%3D97ba4a24b86bb799290896ad19dc57b4)