docs: function (options) {
  	var defaultOptions = {
  		viewCacheDir: viewCacheDir,
  		expires: 3600
  	};
  	this.type='flatfile';
  	this.prefix='flatfile';
  	this.driver = 'fs';
  	this._size = 0;
  	this._hits = 0;
  	this._misses = 0;
  	this.options = merge(defaultOptions,options);
  	this.expires = this.options.expires;
  	viewCacheDir = this.options.viewCacheDir;
  	fs.ensureDir(viewCacheDir,function(err){
  		if(err){
  			console.error(err);
  		}
  	});
  }