Class: Marty::CacheAdapters::Redis

Inherits:
Delorean::Cache::Adapters::Base
  • Object
show all
Defined in:
lib/marty/cache_adapters/redis.rb

Constant Summary collapse

POST = 
'__RedisCache'

Instance Method Summary collapse

Constructor Details

#initialize(size_per_class: 1000, redis_url: Rails.application.config.marty.redis_url, expires_in: 48.hours) ⇒ Redis

Returns a new instance of Redis.



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# File 'lib/marty/cache_adapters/redis.rb', line 10

def initialize(
  size_per_class: 1000,
  redis_url: Rails.application.config.marty.redis_url,
  expires_in: 48.hours
)
  @redis = ::Redis.new(url: "redis://#{redis_url}")
  @expires_in = expires_in
end

Instance Method Details

#cache_item(klass:, cache_key:, item:) ⇒ Object 



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# File 'lib/marty/cache_adapters/redis.rb', line 19

def cache_item(klass:, cache_key:, item:)
  @redis.set(
    cache_key,
    Marshal.dump(item),
    ex: @expires_in.seconds.to_i
  )
end

#cache_item?(klass:, method_name:, args:) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/marty/cache_adapters/redis.rb', line 58

def cache_item?(klass:, method_name:, args:)
  !Mcfly.is_infinity(args&.first)
end

#cache_key(klass:, method_name:, args:) ⇒ Object 



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# File 'lib/marty/cache_adapters/redis.rb', line 35

def cache_key(klass:, method_name:, args:)
  r = ["#{klass.name}#{POST}", method_name] + args.map do |arg|
    next arg.id if arg.respond_to?(:id)

    arg
  end.freeze

  Marshal.dump r
end

#clear!(klass:) ⇒ Object 



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# File 'lib/marty/cache_adapters/redis.rb', line 45

def clear!(klass:)
  keys = @redis.keys("*#{klass.name}#{POST}*")
  @redis.pipelined do
    keys.each do |key|
      @redis.del key
    end
  end
end

#clear_all! ⇒ Object 



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# File 'lib/marty/cache_adapters/redis.rb', line 54

def clear_all!
  @redis.flushall
end

#fetch_item(klass:, cache_key:, default: nil) ⇒ Object 



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# File 'lib/marty/cache_adapters/redis.rb', line 27

def fetch_item(klass:, cache_key:, default: nil)
  r = @redis.get(cache_key)

  return default if r.nil?

  Marshal.load(r)
end