Object
Memcached backend (using gem memcached) @api public
@param [Hash] options @option options [String] :server ('127.0.0.1:11211') Memcached server @option options [String] :namespace Key namespace @option options [Integer] :expires (604800) Default expiration time @option options [::Memcached] :backend Use existing backend instance @option options Other options passed to `Memcached#new`
# File lib/moneta/adapters/memcached/native.rb, line 20 def initialize(options = {}) server = options.delete(:server) || '127.0.0.1:11211' self.default_expires = options.delete(:expires) @backend = options[:backend] || begin options.merge!(:prefix_key => options.delete(:namespace)) if options[:namespace] # We don't want a limitation on the key charset. Therefore we use the binary protocol. # It is also faster. options[:binary_protocol] = true unless options.include?(:binary_protocol) ::Memcached.new(server, options) end end
(see Proxy#clear)
# File lib/moneta/adapters/memcached/native.rb, line 84 def clear(options = {}) @backend.flush self end
(see Defaults#create)
# File lib/moneta/adapters/memcached/native.rb, line 76 def create(key, value, options = {}) @backend.add(key, value, expires_value(options) || 0, false) true rescue ::Memcached::ConnectionDataExists false end
(see Proxy#delete)
# File lib/moneta/adapters/memcached/native.rb, line 52 def delete(key, options = {}) value = @backend.get(key, false) @backend.delete(key) value rescue ::Memcached::NotFound end
(see Proxy#increment)
# File lib/moneta/adapters/memcached/native.rb, line 60 def increment(key, amount = 1, options = {}) result = if amount >= 0 @backend.increment(key, amount) else @backend.decrement(key, -amount) end # HACK: Throw error if applied to invalid value # see https://github.com/evan/memcached/issues/110 Utils.to_int((@backend.get(key, false) rescue nil)) if result == 0 result rescue ::Memcached::NotFound => ex retry unless create(key, amount.to_s, options) amount end
(see Proxy#load)
# File lib/moneta/adapters/memcached/native.rb, line 34 def load(key, options = {}) value = @backend.get(key, false) if value expires = expires_value(options, nil) @backend.set(key, value, expires || 0, false) if expires != nil value end rescue ::Memcached::NotFound end
(see Proxy#store)
# File lib/moneta/adapters/memcached/native.rb, line 45 def store(key, value, options = {}) # TTL must be Fixnum @backend.set(key, value, expires_value(options) || 0, false) value end
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