Class: Rack::Session::Memcache

Inherits:
Abstract::ID show all
Defined in:
lib/gems/rack-0.9.1/lib/rack/session/memcache.rb

Overview

Rack::Session::Memcache provides simple cookie based session management. Session data is stored in memcached. The corresponding session key is maintained in the cookie. You may treat Session::Memcache as you would Session::Pool with the following caveats.

  • Setting :expire_after to 0 would note to the Memcache server to hang onto the session data until it would drop it according to it’s own specifications. However, the cookie sent to the client would expire immediately.

Note that memcache does drop data before it may be listed to expire. For a full description of behaviour, please see memcache’s documentation.

Constant Summary collapse

DEFAULT_OPTIONS = 
Abstract::ID::DEFAULT_OPTIONS.merge({
  :namespace => 'rack:session',
  :memcache_server => 'localhost:11211'
})

Instance Attribute Summary collapse

Attributes inherited from Abstract::ID

#key

Instance Method Summary collapse

Methods inherited from Abstract::ID

#call, #context

Constructor Details

#initialize(app, options = {}) ⇒ Memcache

Returns a new instance of Memcache.



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# File 'lib/gems/rack-0.9.1/lib/rack/session/memcache.rb', line 29

def initialize(app, options={})
  super
  @pool = MemCache.new @default_options[:memcache_server], @default_options
  unless @pool.servers.any?{|s|s.alive?}
    raise "#{self} unable to find server during initialization."
  end
  @mutex = Mutex.new
end

Instance Attribute Details

#mutex ⇒ Object (readonly)

Returns the value of attribute mutex.



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# File 'lib/gems/rack-0.9.1/lib/rack/session/memcache.rb', line 23

def mutex
  @mutex
end

#pool ⇒ Object (readonly)

Returns the value of attribute pool.



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# File 'lib/gems/rack-0.9.1/lib/rack/session/memcache.rb', line 23

def pool
  @pool
end