Class: Alephant::Broker::Cache::Client

Inherits:
Object
  • Object
show all
Includes:
Logger
Defined in:
lib/alephant/broker/cache/client.rb

Constant Summary collapse

DEFAULT_TTL = 
2_592_000

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Client

Returns a new instance of Client.



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# File 'lib/alephant/broker/cache/client.rb', line 12

def initialize
  if config_endpoint.nil?
    logger.debug 'Broker::Cache::Client#initialize: No config endpoint, NullClient used'
    logger.metric 'NoConfigEndpoint'
    @client = NullClient.new
  else
    @elasticache ||= ::Dalli::ElastiCache.new(config_endpoint, expires_in: ttl)
    @client ||= @elasticache.client
  end
end

Instance Method Details

#get(key) ⇒ Object 



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# File 'lib/alephant/broker/cache/client.rb', line 23

def get(key)
  versioned_key = versioned(key)
  result        = @client.get(versioned_key)

  logger.info("Broker::Cache::Client#get key: #{versioned_key} - #{result ? 'hit' : 'miss'}")
  logger.metric('GetKeyMiss') unless result

  return result if result

  set(key, yield) if block_given?
rescue StandardError => error
  logger.info(event: 'ErrorCaught', method: "#{self.class}#get", error: error)
  yield if block_given?
end

#set(key, value, custom_ttl = nil) ⇒ Object 



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# File 'lib/alephant/broker/cache/client.rb', line 38

def set(key, value, custom_ttl = nil)
  versioned_key = versioned(key)
  set_ttl       = custom_ttl || ttl

  logger.info("#{self.class}#set - key: #{versioned_key}, value: #{value}, ttl: #{set_ttl}")

  @client.set(versioned_key, value, set_ttl)

  value
end