YBoss generate Oauth url

	require 'uri'
	require 'cgi'
	require 'openssl'
	require 'base64'
	module YBoss
	class Oauth
	attr_accessor :consumer_key, :consumer_secret, :token, :token_secret, :req_method,
	:sig_method, :oauth_version, :callback_url, :params, :req_url, :base_str
	def initialize
	@consumer_key = '234234234--'
	@consumer_secret = '167234234'
	@token = ''
	@token_secret = ''
	@req_method = 'GET'
	@sig_method = 'HMAC-SHA1'
	@oauth_version = '1.0'
	@callback_url = ''
	end
	# openssl::random_bytes returns non-word chars, which need to be removed. using alt method to get length
	# ref http://snippets.dzone.com/posts/show/491
	def nonce
	Array.new( 5 ) { rand(256) }.pack('C*').unpack('H*').first
	end
	def percent_encode( string )
	# ref http://snippets.dzone.com/posts/show/1260
	return URI.escape(string,
	Regexp.new("[^#{URI::PATTERN::UNRESERVED}]")
	).gsub('*', '%2A').gsub('\'','%27').gsub('(','%28').gsub(')','%29').gsub('!','%21')
	end
	# @ref http://oauth.net/core/1.0/#rfc.section.9.2
	def signature
	key = percent_encode( @consumer_secret ) + '&' + percent_encode( @token_secret )
	# ref: http://blog.nathanielbibler.com/post/63031273/openssl-hmac-vs-ruby-hmac-benchmarks
	digest = OpenSSL::Digest.new( 'sha1' )
	hmac = OpenSSL::HMAC.digest( digest, key, @base_str )
	# ref http://groups.google.com/group/oauth-ruby/browse_thread/thread/9110ed8c8f3cae81
	Base64.encode64( hmac ).chomp.gsub( /\n/, '' )
	end
	# sort (very important as it affects the signature), concat, and percent encode
	# @ref http://oauth.net/core/1.0/#rfc.section.9.1.1
	# @ref http://oauth.net/core/1.0/#9.2.1
	# @ref http://oauth.net/core/1.0/#rfc.section.A.5.1
	def query_string
	pairs = []
	@params.sort.each { | key, val |
	pairs.push( "#{ percent_encode( key ) }=#{ percent_encode( val.to_s ) }" )
	}
	pairs.join '&'
	end
	# organize params & create signature
	def sign( parsed_url )
	@params = {
	'oauth_consumer_key' => @consumer_key,
	'oauth_nonce' => nonce,
	'oauth_signature_method' => @sig_method,
	'oauth_timestamp' => Time.now.to_i.to_s,
	'oauth_version' => @oauth_version
	}
	# if url has query, merge key/values into params obj overwriting defaults
	if parsed_url.query
	CGI.parse( parsed_url.query ).each do |k,v|
	if v.is_a?(Array) && v.count == 1
	@params[k] = v.first
	else
	@params[k] = v
	end
	end
	# @params.merge! CGI.parse( parsed_url.query )
	end
	# @ref http://oauth.net/core/1.0/#rfc.section.9.1.2
	@req_url = parsed_url.scheme + '://' + parsed_url.host + parsed_url.path
	# create base str. make it an object attr for ez debugging
	# ref http://oauth.net/core/1.0/#anchor14
	@base_str = [
	@req_method,
	percent_encode( req_url ),
	# normalization is just x-www-form-urlencoded
	percent_encode( query_string )
	].join( '&' )
	# add signature
	@params[ 'oauth_signature' ] = signature
	return self
	end
	end
	end
	oauth = YBoss::Oauth.new
	yahoo_url = "https://yboss.yahooapis.com/ysearch/web,ads?"
	params = {
	"q" => "dvd",
	"ads.url" => "webiste.com",
	"ads.TYPE" => "ddc_id",
	"ads.Partner" => "ddc_partner"
	}.map{|k,v| "#{k}=#{v}&"}.join.chop!
	# }.to_param
	base = URI.parse(yahoo_url + params )
	yahoo_url + oauth.sign(base).query_string

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Config Heroku unicorn for WEB_CONCURRENCY

	# Using
	# ruby '2.1.3'
	# 'rails', '4.1.8'
	# 1. Test unicorn in background and check the RSS memory
	heroku run bash
	unicorn -c config/unicorn.rb & # Run unicorn in the background
	ps euf # Read RSS value for each worker, in kb - ie: 116040 ~ 116mb
	# USER PID %CPU %MEM VSZ RSS TTY STAT START TIME
	# u41100 3 0.0 0.0 109116 2028 ? S 16:59 0:00
	# u41100 4 0.0 0.0 109916 2760 ? R 16:59 0:00
	# u41100 5 0.0 0.0 106504 1276 ? R+ 16:59 0:00
	# each instance uses 200mb~
	#2. Change the WEB_CONCURRENCY Based on dyno type
	# example x1 (500mb RAM) change the worker_processes to 2
	# worker_processes Integer(ENV["WEB_CONCURRENCY"] || 2)
	# heroku change log https://devcenter.heroku.com/changelog-items/618

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Εικόνες Alpha

https://www.youtube.com/channel/UCXgSdolhgQsV5uriPwkobPQ