Sha256: fc50b9a1455699da4f29de0ba62a3018a808de5fbd650f6eff704e2ac0c42210
Contents?: true
Size: 1.48 KB
Versions: 7
Compression:
Stored size: 1.48 KB
Contents
require 'dalli-elasticache'
require 'alephant/logger'
module Alephant
module Broker
module Cache
class Client
include Logger
DEFAULT_TTL = 2592000
def initialize
unless config_endpoint.nil?
@@elasticache ||= ::Dalli::ElastiCache.new(config_endpoint, { :expires_in => ttl })
@@client ||= @@elasticache.client
else
logger.debug('Broker::Cache::Client#initialize: No config endpoint, NullClient used')
@@client = NullClient.new
end
end
def config_endpoint
Broker.config['elasticache_config_endpoint']
end
def ttl
Broker.config['elasticache_ttl'] || DEFAULT_TTL
end
def versioned(key)
[key, cache_version].compact.join('_')
end
def cache_version
Broker.config['elasticache_cache_version']
end
def get(key, &block)
begin
result = @@client.get(versioned(key))
logger.info("Broker::Cache::Client#get key: #{key} - #{result ? 'hit' : 'miss'}")
result ? result : set(key, block.call)
rescue StandardError => e
block.call if block_given?
end
end
def set(key, value)
value.tap { |o| @@client.set(versioned(key), o) }
end
end
class NullClient
def get(key); end
def set(key, value)
value
end
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems