Module: SimpleCache

Defined in:
lib/simple_cache.rb,
lib/simple_cache.rb

Defined Under Namespace

Modules: Interface, Marshal, SimplyCached Classes: MemcachedStore, NullStore, PgStore, RedisStore, SqliteDatabase, SqliteStore

Class Method Summary collapse

Class Method Details

.cache_key(obj) ⇒ Object 



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# File 'lib/simple_cache.rb', line 98

def self.cache_key(obj)
  return SimpleCache::Marshal.md5(obj.cache_key) if obj.respond_to?(:cache_key)

  case obj
  when String
    SimpleCache::Marshal.md5 obj
  when Hash
    parts = []
    obj.each { |k,v| parts << cache_key(k) << cache_key(v) }
    SimpleCache::Marshal.md5 parts.join("/")
  when Array
    parts = obj.map { |part| cache_key(part) }
    SimpleCache::Marshal.md5 parts.join(":")
  else
    SimpleCache::Marshal.md5 self.inspect
  end
end

.create_store(url) ⇒ Object 



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# File 'lib/simple_cache.rb', line 16

def self.create_store(url)
  expect! url => [ "null:", nil, String, Redis, Redis::Namespace ]
  
  klass = case url 
  when Redis, Redis::Namespace  then SimpleCache::RedisStore
  when "null:", nil             then SimpleCache::NullStore
  else
    uri = URI.parse(url)
    expect! uri.scheme => [ nil, "redis", "sqlite", "pg", "memcached" ]

    case uri.scheme
    when "redis"        then SimpleCache::RedisStore
    when nil, "sqlite"  then SimpleCache::SqliteStore
    when "pg"           then SimpleCache::PgStore
    when "memcached"    then SimpleCache::MemcachedStore
    end
  end

  klass.new url
end

.new(url) ⇒ Object 



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# File 'lib/simple_cache.rb', line 37

def self.new(url)
  create_store(url).extend SimpleCache::Interface
end