Disable dangerous Redis commands in Ruby

redis.rb

# config/initializers/redis.rb
require 'redis'

# Disables the `flushdb` and `flushall` commands.
class Redis
  module DangerousCommands
    def flushdb
      raise 'This is EXTREMELY DANGEROUS! If you really want to EMPTY THE ENTIRE DATABASE, do it from `redis-cli`.'
      # You could call `super` here if you want to allow access in some circumstances.
    end

    def flushall
      raise 'This is EXTREMELY DANGEROUS! If you really want to FLUSH ALL DATABASES, do it from `redis-cli`.'
      # You could call `super` here if you want to allow access in some circumstances.
    end
  end

  prepend DangerousCommands
end