cheat sheets.

Here's a quick cheat sheet for wycat's moneta cache
(http://github.com/wycats/moneta)


Instantiate the cache:
======================

Create a Moneta::Memory cache store:
>> require 'moneta'
>> require 'moneta/memory'
>> cache = Moneta::Memory.new

Create a Moneta::BasicFile cache store:
>> require 'moneta'
>> require 'moneta/basic_file'
>> cache = Moneta::BasicFile.new(:path => 'my_cache_dir')


Use the cache:
==============

Basic Usage:
>> cache['my_key'] = 'my_value'
=> "my_value"
>> cache['my_key']
=> "my_value"

Set an expiration:
>> cache.store('my_2nd_key', 'my_2nd_value', :expires => 100)
>> cache['my_2nd_key']
=> "my_2nd_value"



The API:
========

#initialize(options)::
Options differs per-store, and is used to set up the store.

#[](key)::
Retrieve a key. if the key is not available, return nil.

#[]=(key, value)::
Set a value for a key. if the key is already used, clobber it. Keys set using
[]= will never expire.

#delete(key)::
Delete the key from the store and return the current value.

#key?(key)::
true if the key exists, false if it does not

#has_key?(key)::
Alias for key?

#store(key, value, options)::   
Same as []=, but you can supply an :expires_in option, which will specify a
number of seconds before the key should expire. In order to support the same
features across all stores, only full seconds are supported.

#update_key(key, options)::     
Updates an existing key with a new :expires_in option. If the key has already
expired, it will not be updated.

#clear::                        
Clear all keys in this store.