Class: Rack::Cache::EntityStore::MemCache

Inherits:
MemCacheBase show all
Defined in:
lib/rack/cache/entitystore.rb

Overview

Uses the memcache-client ruby library. This is the default unless the memcached library has already been required.

Constant Summary

Constants inherited from Rack::Cache::EntityStore

DISK, FILE, GAE, GAECACHE, HEAP, MEM, MEMCACHE, MEMCACHED

Instance Attribute Summary

Attributes inherited from MemCacheBase

#cache

Instance Method Summary collapse

Methods inherited from MemCacheBase

#open, resolve

Constructor Details

#initialize(server = "localhost:11211", options = {}) ⇒ MemCache

Returns a new instance of MemCache.



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# File 'lib/rack/cache/entitystore.rb', line 204

def initialize(server="localhost:11211", options={})
  @cache =
    if server.respond_to?(:stats)
      server
    else
      require 'memcache'
      ::MemCache.new(server, options)
    end
end

Instance Method Details

#exist?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rack/cache/entitystore.rb', line 214

def exist?(key)
  !cache.get(key).nil?
end

#purge(key) ⇒ Object 



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# File 'lib/rack/cache/entitystore.rb', line 228

def purge(key)
  cache.delete(key)
  nil
end

#read(key) ⇒ Object 



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# File 'lib/rack/cache/entitystore.rb', line 218

def read(key)
  cache.get(key)
end

#write(body) ⇒ Object 



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# File 'lib/rack/cache/entitystore.rb', line 222

def write(body)
  buf = StringIO.new
  key, size = slurp(body){|part| buf.write(part) }
  [key, size] if cache.set(key, buf.string)
end